Vulnerabilities > CVE-2012-3518 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in TOR

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2012-541.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(74733);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2012-3517", "CVE-2012-3518", "CVE-2012-3519");

  script_name(english:"openSUSE Security Update : tor (openSUSE-SU-2012:1068-1)");
  script_summary(english:"Check for the openSUSE-2012-541 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Tor 0.2.2.38 fixes a rare race condition that can crash exit relays;
fixes a remotely triggerable crash bug; and fixes a timing attack that
could in theory leak path information."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=776642"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.opensuse.org/opensuse-updates/2012-08/msg00048.html"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected tor packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:tor");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:tor-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:tor-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:12.2");

  script_set_attribute(attribute:"patch_publication_date", value:"2012/08/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/13");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2020 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 !~ "^(SUSE12\.2)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "12.2", 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:"SUSE12.2", reference:"tor-0.2.2.38-3.4.1") ) flag++;
if ( rpm_check(release:"SUSE12.2", reference:"tor-debuginfo-0.2.2.38-3.4.1") ) flag++;
if ( rpm_check(release:"SUSE12.2", reference:"tor-debugsource-0.2.2.38-3.4.1") ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "tor");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 201301-03.
#
# The advisory text is Copyright (C) 2001-2015 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(63437);
  script_version("1.5");
  script_cvs_date("Date: 2018/08/10 18:07:07");

  script_cve_id("CVE-2012-3517", "CVE-2012-3518", "CVE-2012-3519", "CVE-2012-4419", "CVE-2012-4922", "CVE-2012-5573");
  script_xref(name:"GLSA", value:"201301-03");

  script_name(english:"GLSA-201301-03 : Tor: 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-201301-03
(Tor: Multiple vulnerabilities)

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

    A remote attacker could cause a Denial of Service condition or obtain
      sensitive information.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201301-03"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All Tor users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=net-misc/tor-0.2.3.25'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");

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

  script_set_attribute(attribute:"patch_publication_date", value:"2013/01/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/01/09");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2018 Tenable Network Security, Inc.");
  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/tor", unaffected:make_list("ge 0.2.3.25"), vulnerable:make_list("lt 0.2.3.25"))) flag++;

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

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-2548. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(62086);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2012-3518", "CVE-2012-3519", "CVE-2012-4419");
  script_xref(name:"DSA", value:"2548");

  script_name(english:"Debian DSA-2548-1 : tor - several vulnerabilities");
  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:
"Several vulnerabilities have been discovered in Tor, an online privacy
tool.

  - CVE-2012-3518
    Avoid an uninitialised memory read when reading a vote
    or consensus document that has an unrecognized flavour
    name. This could lead to a remote crash, resulting in
    denial of service.

  - CVE-2012-3519
    Try to leak less information about what relays a client
    is choosing to a side-channel attacker.

  - CVE-2012-4419
    By providing specially crafted date strings to a victim
    tor instance, an attacker can cause it to run into an
    assertion and shut down.

Additionally the update to stable includes the following fixes: when
waiting for a client to renegotiate, don't allow it to add any bytes
to the input buffer. This fixes a potential DoS issue [ tor-5934,
tor-6007]."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2012-3518"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2012-3519"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2012-4419"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://trac.torproject.org/projects/tor/ticket/5934"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://trac.torproject.org/projects/tor/ticket/6007"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze/tor"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2012/dsa-2548"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the tor packages.

For the stable distribution (squeeze), these problems have been fixed
in version 0.2.2.39-1."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tor");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2012/09/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/09/14");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2020 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:"6.0", prefix:"tor", reference:"0.2.2.39-1")) flag++;
if (deb_check(release:"6.0", prefix:"tor-dbg", reference:"0.2.2.39-1")) flag++;
if (deb_check(release:"6.0", prefix:"tor-geoipdb", reference:"0.2.2.39-1")) flag++;

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

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Mandriva Linux Security Advisory MDVSA-2013:132. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(66144);
  script_version("1.7");
  script_cvs_date("Date: 2019/08/02 13:32:55");

  script_cve_id("CVE-2011-2768", "CVE-2011-2769", "CVE-2012-3517", "CVE-2012-3518", "CVE-2012-3519", "CVE-2012-4419", "CVE-2012-5573");
  script_bugtraq_id(50414, 55128, 55519, 56675);
  script_xref(name:"MDVSA", value:"2013:132");
  script_xref(name:"MGASA", value:"2012-0276");
  script_xref(name:"MGASA", value:"2012-0356");

  script_name(english:"Mandriva Linux Security Advisory : tor (MDVSA-2013:132)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Mandriva Linux host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated tor package fixes security vulnerabilities :

Tor before 0.2.2.34, when configured as a client or bridge, sends a
TLS certificate chain as part of an outgoing OR connection, which
allows remote relays to bypass intended anonymity properties by
reading this chain and then determining the set of entry guards that
the client or bridge had selected (CVE-2011-2768).

Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE
and CREATE_FAST values in the Command field of a cell within an OR
connection that it initiated, which allows remote relays to enumerate
bridges by using these values (CVE-2011-2769).

Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might
allow remote attackers to cause a denial of service (daemon crash) via
vectors related to failed DNS requests (CVE-2012-3517).

The networkstatus_parse_vote_from_string function in routerparse.c in
Tor before 0.2.2.38 does not properly handle an invalid flavor name,
which allows remote attackers to cause a denial of service
(out-of-bounds read and daemon crash) via a crafted (1) vote document
or (2) consensus document (CVE-2012-3518).

routerlist.c in Tor before 0.2.2.38 uses a different amount of time
for relay-list iteration depending on which relay is chosen, which
might allow remote attackers to obtain sensitive information about
relay selection via a timing side-channel attack (CVE-2012-3519).

The compare_tor_addr_to_addr_policy function in or/policies.c in Tor
before 0.2.2.39, and 0.2.3.x before 0.2.3.21-rc, allows remote
attackers to cause a denial of service (assertion failure and daemon
exit) via a zero-valued port field that is not properly handled during
policy comparison (CVE-2012-4419).

Tor before 0.2.2.39, when waiting for a client to renegotiate, allowed
it to add bytes to the input buffer, allowing a crash to be caused
remotely (tor-5934, tor-6007).

Denial of Service vulnerability in Tor before 0.2.3.25, due to an
error when handling SENDME cells and can be exploited to cause
excessive consumption of memory resources within an entry node
(SA51329, CVE-2012-5573).

The version of Tor shipped in MBS1 did not have correctly formed
systemd unit and thus failed to start.

This updated version corrects this problem and restores working
behaviour."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://wiki.mageia.org/en/Support/Advisories/MGAA-2012-0184"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected tor package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:tor");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:business_server:1");

  script_set_attribute(attribute:"patch_publication_date", value:"2013/04/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/04/20");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Mandriva Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/Mandrake/release", "Host/Mandrake/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);
if (!get_kb_item("Host/Mandrake/release")) audit(AUDIT_OS_NOT, "Mandriva / Mandake Linux");
if (!get_kb_item("Host/Mandrake/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^(amd64|i[3-6]86|x86_64)$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Mandriva / Mandrake Linux", cpu);


flag = 0;
if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"tor-0.2.2.39-1.mbs1")) flag++;


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