Vulnerabilities > CVE-2018-20721 - Out-of-bounds Read 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
uriparser-project
debian
CWE-125
critical
nessus
NVD
Published: 2019-01-16
Updated: 2024-11-21

Summary

URI_FUNC() in UriParse.c in uriparser before 0.9.1 has an out-of-bounds read (in uriParse*Ex* functions) for an incomplete URI with an IPv6 address containing an embedded IPv4 address, such as a "//[::44.1" address.

Vulnerable Configurations

Part Description Count
Application
Uriparser_Project
33
OS
Debian
2

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Overread Buffers
    An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

Nessus

  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2019-165.NASL
    descriptionThis update for uriparser fixes the following issues : Security issues fixed : - CVE-2018-20721: Fixed an out-of-bounds read for incomplete URIs with IPv6 addresses with embedded IPv4 address (bsc#1122193). - CVE-2018-19198: Fixed an out-of-bounds write that was possible via the uriComposeQuery* or uriComposeQueryEx* function (bsc#1115722). - CVE-2018-19199: Fixed an integer overflow caused by an unchecked multiplication via the uriComposeQuery* or uriComposeQueryEx* function (bsc#1115723). - CVE-2018-19200: Fixed a operation attempted on NULL input via a uriResetUri* function (bsc#1115724). This update was imported from the SUSE:SLE-15:Update update project.
    last seen2020-06-01
    modified2020-06-02
    plugin id122178
    published2019-02-14
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/122178
    titleopenSUSE Security Update : uriparser (openSUSE-2019-165)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2019-165.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(122178);
  script_version("1.3");
  script_cvs_date("Date: 2020/02/12");

  script_cve_id("CVE-2018-19198", "CVE-2018-19199", "CVE-2018-19200", "CVE-2018-20721");

  script_name(english:"openSUSE Security Update : uriparser (openSUSE-2019-165)");
  script_summary(english:"Check for the openSUSE-2019-165 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 uriparser fixes the following issues :

Security issues fixed :

  - CVE-2018-20721: Fixed an out-of-bounds read for
    incomplete URIs with IPv6 addresses with embedded IPv4
    address (bsc#1122193).

  - CVE-2018-19198: Fixed an out-of-bounds write that was
    possible via the uriComposeQuery* or uriComposeQueryEx*
    function (bsc#1115722).

  - CVE-2018-19199: Fixed an integer overflow caused by an
    unchecked multiplication via the uriComposeQuery* or
    uriComposeQueryEx* function (bsc#1115723).

  - CVE-2018-19200: Fixed a operation attempted on NULL
    input via a uriResetUri* function (bsc#1115724).

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=1115722"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1115723"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1115724"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1122193"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected uriparser 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:liburiparser1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:liburiparser1-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:liburiparser1-32bit-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:liburiparser1-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:uriparser");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:uriparser-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:uriparser-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:uriparser-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/11/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/03/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/02/14");
  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:"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 !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE15.0", reference:"liburiparser1-0.8.5-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"liburiparser1-debuginfo-0.8.5-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"uriparser-0.8.5-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"uriparser-debuginfo-0.8.5-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"uriparser-debugsource-0.8.5-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"uriparser-devel-0.8.5-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"liburiparser1-32bit-0.8.5-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"liburiparser1-32bit-debuginfo-0.8.5-lp150.2.3.1") ) 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, "liburiparser1 / liburiparser1-32bit / liburiparser1-32bit-debuginfo / etc");
}
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2019-0228-1.NASL
    descriptionThis update for uriparser fixes the following issues : Security issues fixed : CVE-2018-20721: Fixed an out-of-bounds read for incomplete URIs with IPv6 addresses with embedded IPv4 address (bsc#1122193). CVE-2018-19198: Fixed an out-of-bounds write that was possible via the uriComposeQuery* or uriComposeQueryEx* function (bsc#1115722). CVE-2018-19199: Fixed an integer overflow caused by an unchecked multiplication via the uriComposeQuery* or uriComposeQueryEx* function (bsc#1115723). CVE-2018-19200: Fixed a operation attempted on NULL input via a uriResetUri* function (bsc#1115724). 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 seen2020-03-18
    modified2019-02-06
    plugin id121610
    published2019-02-06
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/121610
    titleSUSE SLED15 / SLES15 Security Update : uriparser (SUSE-SU-2019:0228-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2019:0228-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(121610);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/02/20");

  script_cve_id("CVE-2018-19198", "CVE-2018-19199", "CVE-2018-19200", "CVE-2018-20721");

  script_name(english:"SUSE SLED15 / SLES15 Security Update : uriparser (SUSE-SU-2019:0228-1)");
  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 uriparser fixes the following issues :

Security issues fixed :

CVE-2018-20721: Fixed an out-of-bounds read for incomplete URIs with
IPv6 addresses with embedded IPv4 address (bsc#1122193).

CVE-2018-19198: Fixed an out-of-bounds write that was possible via the
uriComposeQuery* or uriComposeQueryEx* function (bsc#1115722).

CVE-2018-19199: Fixed an integer overflow caused by an unchecked
multiplication via the uriComposeQuery* or uriComposeQueryEx* function
(bsc#1115723).

CVE-2018-19200: Fixed a operation attempted on NULL input via a
uriResetUri* function (bsc#1115724).

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=1115722"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1115723"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1115724"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1122193"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-19198/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-19199/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-19200/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-20721/"
  );
  # https://www.suse.com/support/update/announcement/2019/suse-su-20190228-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?95018665"
  );
  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 Module for Open Buildservice Development Tools
15:zypper in -t patch
SUSE-SLE-Module-Development-Tools-OBS-15-2019-228=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:liburiparser1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:liburiparser1-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:uriparser");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:uriparser-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:uriparser-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:uriparser-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/11/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/02/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/02/06");
  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:"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)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP0", os_ver + " SP" + sp);
if (os_ver == "SLED15" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLED15 SP0", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES15", sp:"0", reference:"liburiparser1-0.8.5-3.5.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"liburiparser1-debuginfo-0.8.5-3.5.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"uriparser-0.8.5-3.5.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"uriparser-debuginfo-0.8.5-3.5.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"uriparser-debugsource-0.8.5-3.5.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"uriparser-devel-0.8.5-3.5.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"liburiparser1-0.8.5-3.5.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"liburiparser1-debuginfo-0.8.5-3.5.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"uriparser-0.8.5-3.5.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"uriparser-debuginfo-0.8.5-3.5.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"uriparser-debugsource-0.8.5-3.5.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"uriparser-devel-0.8.5-3.5.1")) 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, "uriparser");
}
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-1682.NASL
    descriptionJoergen Ibsen reported an issue with uriparser, a URI parsing library compliant with RFC 3986. An Out-of-bounds read for incomplete URIs with IPv6 addresses with embedded IPv4 address, e.g.
    last seen2020-06-01
    modified2020-06-02
    plugin id122267
    published2019-02-19
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/122267
    titleDebian DLA-1682-1 : uriparser security update

References