Vulnerabilities > CVE-2019-16239 - Classic Buffer Overflow vulnerability in multiple products

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
infradead
fedoraproject
debian
canonical
opensuse
CWE-120
critical
nessus
NVD
Published: 2019-09-17
Updated: 2024-11-21

Summary

process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.

Vulnerable Configurations

Part Description Count
Application
Infradead
61
OS
Fedoraproject
3
OS
Debian
3
OS
Canonical
1
OS
Opensuse
2

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-1945.NASL
    descriptionA vulnerability was discovered by Lukas Kupczyk of the Advanced Research Team at CrowdStrike Intelligence in OpenConnect, an open client for Cisco AnyConnect, Pulse, GlobalProtect VPN. A malicious HTTP server (after its identity certificate has been accepted) can provide bogus chunk lengths for chunked HTTP encoding and cause a heap overflow. For Debian 8
    last seen2020-06-01
    modified2020-06-02
    plugin id129572
    published2019-10-04
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/129572
    titleDebian DLA-1945-1 : openconnect security update
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1945-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(129572);
  script_version("1.3");
  script_cvs_date("Date: 2019/12/23");

  script_cve_id("CVE-2019-16239");

  script_name(english:"Debian DLA-1945-1 : openconnect 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:
"A vulnerability was discovered by Lukas Kupczyk of the Advanced
Research Team at CrowdStrike Intelligence in OpenConnect, an open
client for Cisco AnyConnect, Pulse, GlobalProtect VPN. A malicious
HTTP server (after its identity certificate has been accepted) can
provide bogus chunk lengths for chunked HTTP encoding and cause a heap
overflow.

For Debian 8 'Jessie', this problem has been fixed in version
6.00-2+deb8u1.

We recommend that you upgrade your openconnect 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/2019/10/msg00003.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/openconnect"
  );
  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_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:debian:debian_linux:libopenconnect-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libopenconnect3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libopenconnect3-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openconnect");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openconnect-dbg");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/04");
  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 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:"libopenconnect-dev", reference:"6.00-2+deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"libopenconnect3", reference:"6.00-2+deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"libopenconnect3-dbg", reference:"6.00-2+deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"openconnect", reference:"6.00-2+deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"openconnect-dbg", reference:"6.00-2+deb8u1")) 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");
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2019-1CAFFA01F2.NASL
    descriptionUpdate to 8.05 release (CVE-2019-16239) 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id129078
    published2019-09-20
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/129078
    titleFedora 30 : openconnect (2019-1caffa01f2)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory FEDORA-2019-1caffa01f2.
#

include("compat.inc");

if (description)
{
  script_id(129078);
  script_version("1.4");
  script_cvs_date("Date: 2019/12/27");

  script_cve_id("CVE-2019-16239");
  script_xref(name:"FEDORA", value:"2019-1caffa01f2");

  script_name(english:"Fedora 30 : openconnect (2019-1caffa01f2)");
  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:
"Update to 8.05 release (CVE-2019-16239)

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-2019-1caffa01f2"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openconnect 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:openconnect");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:30");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/09/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/09/20");
  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 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:"^30([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 30", "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:"FC30", reference:"openconnect-8.05-1.fc30")) 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, "openconnect");
}
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2019-4C0D6E1784.NASL
    descriptionUpdate to 8.05 release (CVE-2019-16239) 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id129080
    published2019-09-20
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/129080
    titleFedora 29 : openconnect (2019-4c0d6e1784)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory FEDORA-2019-4c0d6e1784.
#

include("compat.inc");

if (description)
{
  script_id(129080);
  script_version("1.4");
  script_cvs_date("Date: 2019/12/27");

  script_cve_id("CVE-2019-16239");
  script_xref(name:"FEDORA", value:"2019-4c0d6e1784");

  script_name(english:"Fedora 29 : openconnect (2019-4c0d6e1784)");
  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:
"Update to 8.05 release (CVE-2019-16239)

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-2019-4c0d6e1784"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openconnect 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:openconnect");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:29");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/09/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/09/20");
  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 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:"openconnect-8.05-1.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, "openconnect");
}
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2019-2388.NASL
    descriptionThis update for openconnect fixes the following issues : - CVE-2019-16239: Fixed a buffer overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes. (bsc#1151178) This update was imported from the SUSE:SLE-15:Update update project.
    last seen2020-06-01
    modified2020-06-02
    plugin id130336
    published2019-10-28
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/130336
    titleopenSUSE Security Update : openconnect (openSUSE-2019-2388)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2019-2388.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(130336);
  script_version("1.3");
  script_cvs_date("Date: 2019/12/18");

  script_cve_id("CVE-2019-16239");

  script_name(english:"openSUSE Security Update : openconnect (openSUSE-2019-2388)");
  script_summary(english:"Check for the openSUSE-2019-2388 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for openconnect fixes the following issues :

  - CVE-2019-16239: Fixed a buffer overflow when a malicious
    server uses HTTP chunked encoding with crafted chunk
    sizes. (bsc#1151178)

This update was imported from the SUSE:SLE-15:Update update project."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1151178"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openconnect packages."
  );
  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:novell:opensuse:openconnect");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openconnect-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openconnect-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openconnect-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openconnect-lang");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/28");
  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 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

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

  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/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE15\.0)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.0", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(x86_64)$") audit(AUDIT_ARCH_NOT, "x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE15.0", reference:"openconnect-7.08-lp150.5.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"openconnect-debuginfo-7.08-lp150.5.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"openconnect-debugsource-7.08-lp150.5.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"openconnect-devel-7.08-lp150.5.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"openconnect-lang-7.08-lp150.5.3.1") ) 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, "openconnect / openconnect-debuginfo / openconnect-debugsource / etc");
}
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2019-2737-1.NASL
    descriptionThis update for openconnect fixes the following issues : CVE-2019-16239: Fixed a buffer overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes. (bsc#1151178) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id130162
    published2019-10-23
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/130162
    titleSUSE SLED15 / SLES15 Security Update : openconnect (SUSE-SU-2019:2737-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2019:2737-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(130162);
  script_version("1.3");
  script_cvs_date("Date: 2019/12/18");

  script_cve_id("CVE-2019-16239");

  script_name(english:"SUSE SLED15 / SLES15 Security Update : openconnect (SUSE-SU-2019:2737-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for openconnect fixes the following issues :

CVE-2019-16239: Fixed a buffer overflow when a malicious server uses
HTTP chunked encoding with crafted chunk sizes. (bsc#1151178)

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE 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://bugzilla.suse.com/show_bug.cgi?id=1151178"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2019-16239/"
  );
  # https://www.suse.com/support/update/announcement/2019/suse-su-20192737-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?0fbff4cb"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Workstation Extension 15-SP1:zypper in -t patch
SUSE-SLE-Product-WE-15-SP1-2019-2737=1

SUSE Linux Enterprise Workstation Extension 15:zypper in -t patch
SUSE-SLE-Product-WE-15-2019-2737=1

SUSE Linux Enterprise Module for Open Buildservice Development Tools
15-SP1:zypper in -t patch
SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2019-2737=1

SUSE Linux Enterprise Module for Open Buildservice Development Tools
15:zypper in -t patch
SUSE-SLE-Module-Development-Tools-OBS-15-2019-2737=1"
  );
  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:novell:suse_linux:openconnect-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openconnect-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openconnect-doc");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/23");
  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 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED15|SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED15 / SLES15", "SUSE " + os_ver);

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

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES15" && (! preg(pattern:"^(0|1)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP0/1", os_ver + " SP" + sp);
if (os_ver == "SLED15" && (! preg(pattern:"^(0|1)$", string:sp))) audit(AUDIT_OS_NOT, "SLED15 SP0/1", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES15", sp:"1", reference:"openconnect-debuginfo-7.08-6.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"openconnect-debugsource-7.08-6.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"openconnect-doc-7.08-6.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"openconnect-debuginfo-7.08-6.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"openconnect-debugsource-7.08-6.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"openconnect-doc-7.08-6.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"openconnect-debuginfo-7.08-6.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"openconnect-debugsource-7.08-6.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"openconnect-doc-7.08-6.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"openconnect-debuginfo-7.08-6.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"openconnect-debugsource-7.08-6.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"openconnect-doc-7.08-6.3.1")) 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, "openconnect");
}
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2019-6969467639.NASL
    descriptionUpdate to 8.05 release (CVE-2019-16239) 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id129624
    published2019-10-07
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/129624
    titleFedora 31 : openconnect (2019-6969467639)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory FEDORA-2019-6969467639.
#

include("compat.inc");

if (description)
{
  script_id(129624);
  script_version("1.3");
  script_cvs_date("Date: 2019/12/20");

  script_cve_id("CVE-2019-16239");
  script_xref(name:"FEDORA", value:"2019-6969467639");

  script_name(english:"Fedora 31 : openconnect (2019-6969467639)");
  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:
"Update to 8.05 release (CVE-2019-16239)

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-2019-6969467639"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openconnect 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:openconnect");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:31");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/09/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/07");
  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 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:"^31([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 31", "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:"FC31", reference:"openconnect-8.05-1.fc31")) 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, "openconnect");
}
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2019-2385.NASL
    descriptionThis update for openconnect fixes the following issues : - CVE-2019-16239: Fixed a buffer overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes. (bsc#1151178) This update was imported from the SUSE:SLE-15:Update update project.
    last seen2020-06-01
    modified2020-06-02
    plugin id130335
    published2019-10-28
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/130335
    titleopenSUSE Security Update : openconnect (openSUSE-2019-2385)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2019-2385.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(130335);
  script_version("1.3");
  script_cvs_date("Date: 2019/12/18");

  script_cve_id("CVE-2019-16239");

  script_name(english:"openSUSE Security Update : openconnect (openSUSE-2019-2385)");
  script_summary(english:"Check for the openSUSE-2019-2385 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for openconnect fixes the following issues :

  - CVE-2019-16239: Fixed a buffer overflow when a malicious
    server uses HTTP chunked encoding with crafted chunk
    sizes. (bsc#1151178)

This update was imported from the SUSE:SLE-15:Update update project."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1151178"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openconnect packages."
  );
  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:novell:opensuse:openconnect");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openconnect-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openconnect-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openconnect-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openconnect-lang");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.1");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/28");
  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 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

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

  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/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE15\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.1", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(x86_64)$") audit(AUDIT_ARCH_NOT, "x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE15.1", reference:"openconnect-7.08-lp151.6.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"openconnect-debuginfo-7.08-lp151.6.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"openconnect-debugsource-7.08-lp151.6.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"openconnect-devel-7.08-lp151.6.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"openconnect-lang-7.08-lp151.6.3.1") ) 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, "openconnect / openconnect-debuginfo / openconnect-debugsource / etc");
}
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-4607.NASL
    descriptionLukas Kupczyk reported a vulnerability in the handling of chunked HTTP in openconnect, an open client for Cisco AnyConnect, Pulse and GlobalProtect VPN. A malicious HTTP server (after having accepted its identity certificate), can provide bogus chunk lengths for chunked HTTP encoding and cause a heap-based buffer overflow.
    last seen2020-06-01
    modified2020-06-02
    plugin id133110
    published2020-01-21
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/133110
    titleDebian DSA-4607-1 : openconnect - security update
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2019-2744-1.NASL
    descriptionThis update for openconnect fixes the following issues : CVE-2019-16239: Fixed a buffer overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes. (bsc#1151178) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id130165
    published2019-10-23
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/130165
    titleSUSE SLED12 Security Update : openconnect (SUSE-SU-2019:2744-1)

References