Vulnerabilities > CVE-2018-16839 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple products

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory FEDORA-2018-7785911c9e.
#

include("compat.inc");

if (description)
{
  script_id(120542);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2018-16839", "CVE-2018-16840", "CVE-2018-16842");
  script_xref(name:"FEDORA", value:"2018-7785911c9e");

  script_name(english:"Fedora 29 : curl (2018-7785911c9e)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"  - SASL password overflow via integer overflow
    (CVE-2018-16839)

  - fix use-after-free in handle close (CVE-2018-16840)

  - fix bad arethmetic when outputting warnings to stderr
    (CVE-2018-16842)

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as
possible without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bodhi.fedoraproject.org/updates/FEDORA-2018-7785911c9e"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected curl package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:curl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:29");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/10/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/11/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/03");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! preg(pattern:"^29([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 29", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);


flag = 0;
if (rpm_check(release:"FC29", reference:"curl-7.61.1-4.fc29")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "curl");
}

#
# (C) Tenable Network Security, Inc.
#

# The descriptive text and package checks in this plugin were
# extracted from VMware Security Advisory PHSA-2019-1.0-0205. The text
# itself is copyright (C) VMware, Inc.

include("compat.inc");

if (description)
{
  script_id(122898);
  script_version("1.2");
  script_cvs_date("Date: 2020/02/04");

  script_cve_id("CVE-2018-14618", "CVE-2018-16839");

  script_name(english:"Photon OS 1.0: Curl PHSA-2019-1.0-0205");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote PhotonOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"An update of the curl package has been released.");
  script_set_attribute(attribute:"see_also", value:"https://github.com/vmware/photon/wiki/Security-Updates-1.0-205.md");
  script_set_attribute(attribute:"solution", value:
"Update the affected Linux packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-14618");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/09/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/02/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:curl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:photonos:1.0");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"PhotonOS Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/PhotonOS/release", "Host/PhotonOS/rpm-list");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

release = get_kb_item("Host/PhotonOS/release");
if (isnull(release) || release !~ "^VMware Photon") audit(AUDIT_OS_NOT, "PhotonOS");
if (release !~ "^VMware Photon (?:Linux|OS) 1\.0(\D|$)") audit(AUDIT_OS_NOT, "PhotonOS 1.0");

if (!get_kb_item("Host/PhotonOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "PhotonOS", cpu);

flag = 0;

if (rpm_check(release:"PhotonOS-1.0", reference:"curl-7.59.0-5.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"curl-debuginfo-7.59.0-5.ph1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "curl");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2 Security Advisory ALAS-2019-1162.
#

include("compat.inc");

if (description)
{
  script_id(122260);
  script_version("1.3");
  script_cvs_date("Date: 2020/02/12");

  script_cve_id("CVE-2017-1000254", "CVE-2017-1000257", "CVE-2017-8816", "CVE-2017-8817", "CVE-2017-8818", "CVE-2018-16839", "CVE-2018-16840", "CVE-2018-16842", "CVE-2018-16890", "CVE-2018-20483", "CVE-2019-3822", "CVE-2019-3823");
  script_xref(name:"ALAS", value:"2019-1162");

  script_name(english:"Amazon Linux 2 : curl (ALAS-2019-1162)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Amazon Linux 2 host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"libcurl is vulnerable to a heap buffer out-of-bounds read. The
function handling incoming NTLM type-2 messages
(`lib/vauth/ntlm.c:ntlm_decode_type2_target`) does not validate
incoming data correctly and is subject to an integer overflow
vulnerability. Using that overflow, a malicious or broken NTLM server
could trick libcurl to accept a bad length + offset combination that
would lead to a buffer read out-of-bounds.(CVE-2018-16890)

The NTLM authentication feature in curl and libcurl before 7.57.0 on
32-bit platforms allows attackers to cause a denial of service
(integer overflow and resultant buffer overflow, and application
crash) or possibly have unspecified other impact via vectors involving
long user and password fields.(CVE-2017-8816)

curl and libcurl before 7.57.0 on 32-bit platforms allow attackers to
cause a denial of service (out-of-bounds access and application crash)
or possibly have unspecified other impact because too little memory is
allocated for interfacing to an SSL library.(CVE-2017-8818)

libcurl may read outside of a heap allocated buffer when doing FTP.
When libcurl connects to an FTP server and successfully logs in
(anonymous or not), it asks the server for the current directory with
the `PWD` command. The server then responds with a 257 response
containing the path, inside double quotes. The returned path name is
then kept by libcurl for subsequent uses. Due to a flaw in the string
parser for this directory name, a directory name passed like this but
without a closing double quote would lead to libcurl not adding a
trailing NUL byte to the buffer holding the name. When libcurl would
then later access the string, it could read beyond the allocated heap
buffer and crash or wrongly access data beyond the buffer, thinking it
was part of the path. A malicious server could abuse this fact and
effectively prevent libcurl-based clients to work with it - the PWD
command is always issued on new FTP connections and the mistake has a
high chance of causing a segfault. The simple fact that this has issue
remained undiscovered for this long could suggest that malformed PWD
responses are rare in benign servers. We are not aware of any exploit
of this flaw. This bug was introduced in commit
[415d2e7cb7](https://github.com/curl/curl/commit/415d2e7cb7), March
2005. In libcurl version 7.56.0, the parser always zero terminates the
string but also rejects it if not terminated properly with a final
double quote.(CVE-2017-1000254)

Curl versions 7.14.1 through 7.61.1 are vulnerable to a heap-based
buffer over-read in the tool_msgs.c:voutf() function that may result
in information exposure and denial of service.(CVE-2018-16842)

libcurl is vulnerable to a stack-based buffer overflow. The function
creating an outgoing NTLM type-3 header
(`lib/vauth/ntlm.c:Curl_auth_create_ntlm_type3_message()`), generates
the request HTTP header contents based on previously received data.
The check that exists to prevent the local buffer from getting
overflowed is implemented wrongly (using unsigned math) and as such it
does not prevent the overflow from happening. This output data can
grow larger than the local buffer if very large 'nt response' data is
extracted from a previous NTLMv2 header provided by the malicious or
broken HTTP server. Such a 'large value' needs to be around 1000 bytes
or more. The actual payload data copied to the target buffer comes
from the NTLMv2 type-2 response header.(CVE-2019-3822)

libcurl is vulnerable to a heap out-of-bounds read in the code
handling the end-of-response for SMTP. If the buffer passed to
`smtp_endofresp()` isn't NUL terminated and contains no character
ending the parsed number, and `len` is set to 5, then the `strtol()`
call reads beyond the allocated buffer. The read contents will not be
returned to the caller.(CVE-2019-3823)

The FTP wildcard function in curl and libcurl before 7.57.0 allows
remote attackers to cause a denial of service (out-of-bounds read and
application crash) or possibly have unspecified other impact via a
string that ends with an '[' character.(CVE-2017-8817)

set_file_metadata in xattr.c in GNU Wget before 1.20.1 stores a file's
origin URL in the user.xdg.origin.url metadata attribute of the
extended attributes of the downloaded file, which allows local users
to obtain sensitive information (e.g., credentials contained in the
URL) by reading this attribute, as demonstrated by getfattr. This also
applies to Referer information in the user.xdg.referrer.url metadata
attribute. According to 2016-07-22 in the Wget ChangeLog,
user.xdg.origin.url was partially based on the behavior of
fwrite_xattr in tool_xattr.c in curl.(CVE-2018-20483)

A buffer overrun flaw was found in the IMAP handler of libcurl. By
tricking an unsuspecting user into connecting to a malicious IMAP
server, an attacker could exploit this flaw to potentially cause
information disclosure or crash the application.(CVE-2017-1000257)

A heap use-after-free flaw was found in curl versions from 7.59.0
through 7.61.1 in the code related to closing an easy handle. When
closing and cleaning up an 'easy' handle in the `Curl_close()`
function, the library code first frees a struct (without nulling the
pointer) and might then subsequently erroneously write to a struct
field within that already freed struct.(CVE-2018-16840)

Curl versions 7.33.0 through 7.61.1 are vulnerable to a buffer overrun
in the SASL authentication code that may lead to denial of
service.(CVE-2018-16839)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/AL2/ALAS-2019-1162.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum update curl' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:curl-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libcurl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libcurl-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/10/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/02/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/02/19");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Amazon Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

release = get_kb_item("Host/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "2")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux 2", "Amazon Linux " + os_ver);
}

if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (rpm_check(release:"AL2", reference:"curl-7.61.1-9.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", reference:"curl-debuginfo-7.61.1-9.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", reference:"libcurl-7.61.1-9.amzn2.0.1")) flag++;
if (rpm_check(release:"AL2", reference:"libcurl-devel-7.61.1-9.amzn2.0.1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "curl / curl-debuginfo / libcurl / libcurl-devel");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Slackware Security Advisory 2018-304-01. The text 
# itself is copyright (C) Slackware Linux, Inc.
#

include("compat.inc");

if (description)
{
  script_id(118586);
  script_version("1.2");
  script_cvs_date("Date: 2018/12/10  9:27:38");

  script_cve_id("CVE-2018-16839", "CVE-2018-16840", "CVE-2018-16842");
  script_xref(name:"SSA", value:"2018-304-01");

  script_name(english:"Slackware 14.0 / 14.1 / 14.2 / current : curl (SSA:2018-304-01)");
  script_summary(english:"Checks for updated package in /var/log/packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Slackware host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"New curl packages are available for Slackware 14.0, 14.1, 14.2, and
-current to fix security issues."
  );
  # http://www.slackware.com/security/viewer.php?l=slackware-security&y=2018&m=slackware-security.432448
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?fa628473"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected curl package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:slackware:slackware_linux:curl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.2");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/10/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/01");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Slackware Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Slackware/release", "Host/Slackware/packages");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("slackware.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Slackware/release")) audit(AUDIT_OS_NOT, "Slackware");
if (!get_kb_item("Host/Slackware/packages")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Slackware", cpu);


flag = 0;
if (slackware_check(osver:"14.0", pkgname:"curl", pkgver:"7.62.0", pkgarch:"i486", pkgnum:"1_slack14.0")) flag++;
if (slackware_check(osver:"14.0", arch:"x86_64", pkgname:"curl", pkgver:"7.62.0", pkgarch:"x86_64", pkgnum:"1_slack14.0")) flag++;

if (slackware_check(osver:"14.1", pkgname:"curl", pkgver:"7.62.0", pkgarch:"i486", pkgnum:"1_slack14.1")) flag++;
if (slackware_check(osver:"14.1", arch:"x86_64", pkgname:"curl", pkgver:"7.62.0", pkgarch:"x86_64", pkgnum:"1_slack14.1")) flag++;

if (slackware_check(osver:"14.2", pkgname:"curl", pkgver:"7.62.0", pkgarch:"i586", pkgnum:"1_slack14.2")) flag++;
if (slackware_check(osver:"14.2", arch:"x86_64", pkgname:"curl", pkgver:"7.62.0", pkgarch:"x86_64", pkgnum:"1_slack14.2")) flag++;

if (slackware_check(osver:"current", pkgname:"curl", pkgver:"7.62.0", pkgarch:"i586", pkgnum:"1")) flag++;
if (slackware_check(osver:"current", arch:"x86_64", pkgname:"curl", pkgver:"7.62.0", pkgarch:"x86_64", pkgnum:"1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:slackware_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3805-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(118591);
  script_version("1.4");
  script_cvs_date("Date: 2019/09/18 12:31:48");

  script_cve_id("CVE-2018-16839", "CVE-2018-16840", "CVE-2018-16842");
  script_xref(name:"USN", value:"3805-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : curl vulnerabilities (USN-3805-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Harry Sintonen discovered that curl incorrectly handled SASL
authentication. A remote attacker could use this issue to cause curl
to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2018-16839)

Brian Carpenter discovered that curl incorrectly handled memory when
closing certain handles. A remote attacker could use this issue to
cause curl to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2018-16840)

Brian Carpenter discovered that the curl command-line tool incorrectly
handled error messages. A remote attacker could possibly use this
issue to obtain sensitive information. (CVE-2018-16842).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/3805-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3-gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl3-nss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurl4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/10/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/10/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/01");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(14\.04|16\.04|18\.04|18\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 14.04 / 16.04 / 18.04 / 18.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"14.04", pkgname:"curl", pkgver:"7.35.0-1ubuntu2.19")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"libcurl3", pkgver:"7.35.0-1ubuntu2.19")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"libcurl3-gnutls", pkgver:"7.35.0-1ubuntu2.19")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"libcurl3-nss", pkgver:"7.35.0-1ubuntu2.19")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"curl", pkgver:"7.47.0-1ubuntu2.11")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"libcurl3", pkgver:"7.47.0-1ubuntu2.11")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"libcurl3-gnutls", pkgver:"7.47.0-1ubuntu2.11")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"libcurl3-nss", pkgver:"7.47.0-1ubuntu2.11")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"curl", pkgver:"7.58.0-2ubuntu3.5")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"libcurl3-gnutls", pkgver:"7.58.0-2ubuntu3.5")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"libcurl3-nss", pkgver:"7.58.0-2ubuntu3.5")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"libcurl4", pkgver:"7.58.0-2ubuntu3.5")) flag++;
if (ubuntu_check(osver:"18.10", pkgname:"curl", pkgver:"7.61.0-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"18.10", pkgname:"libcurl3-gnutls", pkgver:"7.61.0-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"18.10", pkgname:"libcurl3-nss", pkgver:"7.61.0-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"18.10", pkgname:"libcurl4", pkgver:"7.61.0-1ubuntu2.2")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "curl / libcurl3 / libcurl3-gnutls / libcurl3-nss / libcurl4");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 201903-03.
#
# The advisory text is Copyright (C) 2001-2020 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(122731);
  script_version("1.2");
  script_cvs_date("Date: 2020/02/05");

  script_cve_id("CVE-2018-14618", "CVE-2018-16839", "CVE-2018-16840", "CVE-2018-16842", "CVE-2019-3822", "CVE-2019-3823");
  script_xref(name:"GLSA", value:"201903-03");

  script_name(english:"GLSA-201903-03 : cURL: Multiple vulnerabilities");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-201903-03
(cURL: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in cURL. Please review the
      CVE identifiers referenced below for details.
  
Impact :

    Remote attackers could cause a Denial of Service condition.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201903-03"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All cURL users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=net-misc/curl-7.64.0'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:curl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/09/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/03/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/11");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"net-misc/curl", unaffected:make_list("ge 7.64.0"), vulnerable:make_list("lt 7.64.0"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "cURL");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4331. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(118720);
  script_version("1.4");
  script_cvs_date("Date: 2018/12/10  9:27:38");

  script_cve_id("CVE-2018-16839", "CVE-2018-16842");
  script_xref(name:"DSA", value:"4331");

  script_name(english:"Debian DSA-4331-1 : curl - security update");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Two vulnerabilities were discovered in cURL, an URL transfer library.

  - CVE-2018-16839
    Harry Sintonen discovered that, on systems with a 32 bit
    size_t, an integer overflow would be triggered when a
    SASL user name longer than 2GB is used. This would in
    turn cause a very small buffer to be allocated instead
    of the intended very huge one, which would trigger a
    heap buffer overflow when the buffer is used.

  - CVE-2018-16842
    Brian Carpenter discovered that the logic in the curl
    tool to wrap error messages at 80 columns is flawed,
    leading to a read buffer overflow if a single word in
    the message is itself longer than 80 bytes."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2018-16839"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2018-16842"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/source-package/curl"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/curl"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2018/dsa-4331"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the curl packages.

For the stable distribution (stretch), these problems have been fixed
in version 7.52.1-5+deb9u8."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:curl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/11/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/05");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"9.0", prefix:"curl", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3-dbg", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3-gnutls", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3-nss", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-doc", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-gnutls-dev", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-nss-dev", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-openssl-dev", reference:"7.52.1-5+deb9u8")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(118707);
  script_version("1.3");
  script_cvs_date("Date: 2018/12/10  9:27:38");

  script_cve_id("CVE-2018-16839", "CVE-2018-16840", "CVE-2018-16842");

  script_name(english:"FreeBSD : curl -- multiple vulnerabilities (e0ab1773-07c1-46c6-9170-4c5e81c00927)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"curl security problems :

CVE-2018-16839: SASL password overflow via integer overflow

libcurl contains a buffer overrun in the SASL authentication code.

The internal function Curl_auth_create_plain_message fails to
correctly verify that the passed in lengths for name and password
aren't too long, then calculates a buffer size to allocate.

On systems with a 32 bit size_t, the math to calculate the buffer size
triggers an integer overflow when the user name length exceeds 2GB
(2^31 bytes). This integer overflow usually causes a very small buffer
to actually get allocated instead of the intended very huge one,
making the use of that buffer end up in a heap buffer overflow.

This bug is very similar to CVE-2017-14618.

It affects curl 7.33.0 to 7.61.1.

CVE-2018-16840: use-after-free in handle close

libcurl contains a heap use-after-free flaw in code related to closing
an easy handle.

When closing and cleaning up an 'easy' handle in the Curl_close()
function, the library code first frees a struct (without nulling the
pointer) and might then subsequently erroneously write to a struct
field within that already freed struct.

It affects curl 7.59.0 to 7.61.1.

CVE-2018-16842: warning message out-of-buffer read

curl contains a heap out of buffer read vulnerability.

The command line tool has a generic function for displaying warning
and informational messages to stderr for various situations. For
example if an unknown command line argument is used, or passed to it
in a 'config' file.

This display function formats the output to wrap at 80 columns. The
wrap logic is however flawed, so if a single word in the message is
itself longer than 80 bytes the buffer arithmetic calculates the
remainder wrong and will end up reading behind the end of the buffer.
This could lead to information disclosure or crash.

This vulnerability could lead to a security issue if used in this or
similar situations :

1. a server somewhere uses the curl command line to run something

2. if it fails, it shows stderr to the user

3. the server takes user input for parts of its command line input

4. user provides something overly long that triggers this crash

5. the stderr output may now contain user memory contents that wasn't
meant to be available

It affects curl 7.14.1 to 7.61.1."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://curl.haxx.se/docs/security.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://curl.haxx.se/docs/CVE-2018-16839.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://curl.haxx.se/docs/CVE-2018-16840.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://curl.haxx.se/docs/CVE-2018-16842.html"
  );
  # https://vuxml.freebsd.org/freebsd/e0ab1773-07c1-46c6-9170-4c5e81c00927.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?79d7317b"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:curl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/10/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/11/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/02");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"curl>=7.14.1<7.60.0")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1568-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(118753);
  script_version("1.1");
  script_cvs_date("Date: 2018/11/07 11:02:18");

  script_cve_id("CVE-2016-7141", "CVE-2016-7167", "CVE-2016-9586", "CVE-2018-16839", "CVE-2018-16842");

  script_name(english:"Debian DLA-1568-1 : curl security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Several vulnerabilities were discovered in cURL, an URL transfer
library.

CVE-2016-7141

When built with NSS and the libnsspem.so library is available at
runtime, allows an remote attacker to hijack the authentication of a
TLS connection by leveraging reuse of a previously loaded client
certificate from file for a connection for which no certificate has
been set, a different vulnerability than CVE-2016-5420.

CVE-2016-7167

Multiple integer overflows in the (1) curl_escape, (2)
curl_easy_escape, (3) curl_unescape, and (4) curl_easy_unescape
functions in libcurl allow attackers to have unspecified impact via a
string of length 0xffffffff, which triggers a heap-based buffer
overflow.

CVE-2016-9586

Curl is vulnerable to a buffer overflow when doing a large floating
point output in libcurl's implementation of the printf() functions. If
there are any applications that accept a format string from the
outside without necessary input filtering, it could allow remote
attacks.

CVE-2018-16839

Curl is vulnerable to a buffer overrun in the SASL authentication code
that may lead to denial of service.

CVE-2018-16842

Curl is vulnerable to a heap-based buffer over-read in the
tool_msgs.c:voutf() function that may result in information exposure
and denial of service.

For Debian 8 'Jessie', these problems have been fixed in version
7.38.0-4+deb8u13.

We recommend that you upgrade your curl packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.debian.org/debian-lts-announce/2018/11/msg00005.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/curl"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3-gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3-nss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-gnutls-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-nss-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-openssl-dev");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/11/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/07");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"8.0", prefix:"curl", reference:"7.38.0-4+deb8u13")) flag++;
if (deb_check(release:"8.0", prefix:"libcurl3", reference:"7.38.0-4+deb8u13")) flag++;
if (deb_check(release:"8.0", prefix:"libcurl3-dbg", reference:"7.38.0-4+deb8u13")) flag++;
if (deb_check(release:"8.0", prefix:"libcurl3-gnutls", reference:"7.38.0-4+deb8u13")) flag++;
if (deb_check(release:"8.0", prefix:"libcurl3-nss", reference:"7.38.0-4+deb8u13")) flag++;
if (deb_check(release:"8.0", prefix:"libcurl4-doc", reference:"7.38.0-4+deb8u13")) flag++;
if (deb_check(release:"8.0", prefix:"libcurl4-gnutls-dev", reference:"7.38.0-4+deb8u13")) flag++;
if (deb_check(release:"8.0", prefix:"libcurl4-nss-dev", reference:"7.38.0-4+deb8u13")) flag++;
if (deb_check(release:"8.0", prefix:"libcurl4-openssl-dev", reference:"7.38.0-4+deb8u13")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");