Vulnerabilities > CVE-2011-4922 - Information Exposure vulnerability in Pidgin

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2011:0616. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(54598);
  script_version ("1.17");
  script_cvs_date("Date: 2019/10/25 13:36:16");

  script_cve_id("CVE-2011-1091", "CVE-2011-4922");
  script_bugtraq_id(46837);
  script_xref(name:"RHSA", value:"2011:0616");

  script_name(english:"RHEL 6 : pidgin (RHSA-2011:0616)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated pidgin packages that fix multiple security issues and various
bugs are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having low
security impact. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available from the
CVE link in the References section.

Pidgin is an instant messaging program which can log in to multiple
accounts on multiple instant messaging networks simultaneously.

Multiple NULL pointer dereference flaws were found in the way the
Pidgin Yahoo! Messenger Protocol plug-in handled malformed YMSG
packets. A remote attacker could use these flaws to crash Pidgin via a
specially crafted notification message. (CVE-2011-1091)

Red Hat would like to thank the Pidgin project for reporting these
issues. Upstream acknowledges Marius Wachtler as the original
reporter.

This update also fixes the following bugs :

* Previous versions of the pidgin package did not properly clear
certain data structures used in libpurple/cipher.c when attempting to
free them. Partial information could potentially be extracted from the
incorrectly cleared regions of the previously freed memory. With this
update, data structures are properly cleared when freed. (BZ#684685)

* This erratum upgrades Pidgin to upstream version 2.7.9. For a list
of all changes addressed in this upgrade, refer to
http://developer.pidgin.im/wiki/ChangeLog (BZ#616917)

* Some incomplete translations for the kn_IN and ta_IN locales have
been corrected. (BZ#633860, BZ#640170)

Users of pidgin should upgrade to these updated packages, which
resolve these issues. Pidgin must be restarted for this update to take
effect."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2011-1091"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2011-4922"
  );
  # http://developer.pidgin.im/wiki/ChangeLog
  script_set_attribute(
    attribute:"see_also",
    value:"https://developer.pidgin.im/wiki/ChangeLog"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2011:0616"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P");
  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:redhat:enterprise_linux:finch");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:finch-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libpurple");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libpurple-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libpurple-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libpurple-tcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:pidgin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:pidgin-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:pidgin-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:pidgin-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:pidgin-perl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2011/03/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/05/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/05/20");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.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) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 6.x", "Red Hat " + 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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2011:0616";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"finch-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"finch-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"finch-devel-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"finch-devel-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"libpurple-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"libpurple-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"libpurple-devel-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"libpurple-devel-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"libpurple-perl-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"libpurple-perl-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"libpurple-tcl-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"libpurple-tcl-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"pidgin-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"pidgin-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"pidgin-debuginfo-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"pidgin-debuginfo-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"pidgin-devel-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"pidgin-devel-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"pidgin-docs-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"pidgin-docs-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"pidgin-perl-2.7.9-3.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"pidgin-perl-2.7.9-3.el6")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "finch / finch-devel / libpurple / libpurple-devel / libpurple-perl / etc");
  }
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-1500-1. 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(59903);
  script_version("1.9");
  script_cvs_date("Date: 2019/09/19 12:54:28");

  script_cve_id("CVE-2011-4601", "CVE-2011-4602", "CVE-2011-4603", "CVE-2011-4922", "CVE-2011-4939", "CVE-2012-1178", "CVE-2012-2214", "CVE-2012-2318", "CVE-2012-3374");
  script_bugtraq_id(46307, 51010, 51070, 51074, 52475, 52476, 53400, 53706, 54322);
  script_xref(name:"USN", value:"1500-1");

  script_name(english:"Ubuntu 10.04 LTS / 11.04 / 11.10 / 12.04 LTS : pidgin vulnerabilities (USN-1500-1)");
  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:
"Evgeny Boger discovered that Pidgin incorrectly handled buddy list
messages in the AIM and ICQ protocol handlers. A remote attacker could
send a specially crafted message and cause Pidgin to crash, leading to
a denial of service. This issue only affected Ubuntu 10.04 LTS, 11.04
and 11.10. (CVE-2011-4601)

Thijs Alkemade discovered that Pidgin incorrectly handled malformed
voice and video chat requests in the XMPP protocol handler. A remote
attacker could send a specially crafted message and cause Pidgin to
crash, leading to a denial of service. This issue only affected Ubuntu
10.04 LTS, 11.04 and 11.10. (CVE-2011-4602)

Diego Bauche Madero discovered that Pidgin incorrectly handled UTF-8
sequences in the SILC protocol handler. A remote attacker could send a
specially crafted message and cause Pidgin to crash, leading to a
denial of service. This issue only affected Ubuntu 10.04 LTS, 11.04
and 11.10. (CVE-2011-4603)

Julia Lawall discovered that Pidgin incorrectly cleared memory
contents used in cryptographic operations. An attacker could exploit
this to read the memory contents, leading to an information
disclosure. This issue only affected Ubuntu 10.04 LTS. (CVE-2011-4922)

Clemens Huebner and Kevin Stange discovered that Pidgin incorrectly
handled nickname changes inside chat rooms in the XMPP protocol
handler. A remote attacker could exploit this by changing nicknames,
leading to a denial of service. This issue only affected Ubuntu 11.10.
(CVE-2011-4939)

Thijs Alkemade discovered that Pidgin incorrectly handled off-line
instant messages in the MSN protocol handler. A remote attacker could
send a specially crafted message and cause Pidgin to crash, leading to
a denial of service. This issue only affected Ubuntu 10.04 LTS, 11.04
and 11.10. (CVE-2012-1178)

Jose Valentin Gutierrez discovered that Pidgin incorrectly handled
SOCKS5 proxy connections during file transfer requests in the XMPP
protocol handler. A remote attacker could send a specially crafted
request and cause Pidgin to crash, leading to a denial of service.
This issue only affected Ubuntu 12.04 LTS and 11.10. (CVE-2012-2214)

Fabian Yamaguchi discovered that Pidgin incorrectly handled malformed
messages in the MSN protocol handler. A remote attacker could send a
specially crafted message and cause Pidgin to crash, leading to a
denial of service. (CVE-2012-2318)

Ulf Harnhammar discovered that Pidgin incorrectly handled messages
with in-line images in the MXit protocol handler. A remote attacker
could send a specially crafted message and possibly execute arbitrary
code with user privileges. (CVE-2012-3374).

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/1500-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected finch, libpurple0 and / or pidgin 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_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:canonical:ubuntu_linux:finch");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpurple0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:pidgin");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:11.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:11.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.04:-:lts");

  script_set_attribute(attribute:"vuln_publication_date", value:"2011/12/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/07/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/07/10");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 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:"^(10\.04|11\.04|11\.10|12\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 10.04 / 11.04 / 11.10 / 12.04", "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:"10.04", pkgname:"finch", pkgver:"1:2.6.6-1ubuntu4.5")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"libpurple0", pkgver:"1:2.6.6-1ubuntu4.5")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"pidgin", pkgver:"1:2.6.6-1ubuntu4.5")) flag++;
if (ubuntu_check(osver:"11.04", pkgname:"finch", pkgver:"1:2.7.11-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"11.04", pkgname:"libpurple0", pkgver:"1:2.7.11-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"11.04", pkgname:"pidgin", pkgver:"1:2.7.11-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"11.10", pkgname:"finch", pkgver:"1:2.10.0-0ubuntu2.1")) flag++;
if (ubuntu_check(osver:"11.10", pkgname:"libpurple0", pkgver:"1:2.10.0-0ubuntu2.1")) flag++;
if (ubuntu_check(osver:"11.10", pkgname:"pidgin", pkgver:"1:2.10.0-0ubuntu2.1")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"finch", pkgver:"1:2.10.3-0ubuntu1.1")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"libpurple0", pkgver:"1:2.10.3-0ubuntu1.1")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"pidgin", pkgver:"1:2.10.3-0ubuntu1.1")) 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, "finch / libpurple0 / pidgin");
}

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

include("compat.inc");

if (description)
{
  script_id(52042);
  script_version("1.6");
  script_cvs_date("Date: 2018/07/24 18:56:13");

  script_cve_id("CVE-2011-4922");
  script_bugtraq_id(46307);
  script_xref(name:"Secunia", value:"43271");

  script_name(english:"Pidgin < 2.7.10 Information Disclosure");
  script_summary(english:"Does a version check");

  script_set_attribute(attribute:"synopsis", value:
"An instant messaging client installed on the remote Windows host is
affected by an information disclosure vulnerability.");
  script_set_attribute(attribute:"description", value:

"The version of Pidgin installed on the remote host is earlier than
2.7.10.  Such versions are potentially affected by an information
disclosure vulnerability because the application does not properly
clear certain data structures used in 'libpurple/cipher.c' prior to
freeing.  An attacker, exploiting this flaw, could potentially extract
partial information from memory regions freed by libpurple.");
 
  script_set_attribute(attribute:"see_also", value:"http://developer.pidgin.im/wiki/ChangeLog");
  script_set_attribute(attribute:"see_also", value:"http://www.pidgin.im/news/security/?id=50");
  script_set_attribute(attribute:"solution", value:"Upgrade to Pidgin 2.7.10 or later.");
 script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/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:"vuln_publication_date",value:"2011/02/06");
  script_set_attribute(attribute:"patch_publication_date",value:"2011/02/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/02/21");

  script_set_attribute(attribute:"plugin_type", value:"local");

  script_set_attribute(attribute:"cpe", value:"cpe:/a:pidgin:pidgin");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2011-2018 Tenable Network Security, Inc.");

  script_dependencies("pidgin_installed.nasl");
  script_require_keys("SMB/Pidgin/Version");

  exit(0);
}


include("global_settings.inc");
include("misc_func.inc");

version = get_kb_item_or_exit("SMB/Pidgin/Version");
fixed_version = '2.7.10';

if (ver_compare(ver:version, fix:fixed_version, strict:FALSE) == -1)
{
  path = get_kb_item("SMB/Pidgin/Path");
  if (isnull(path)) path = 'n/a';
  port = get_kb_item("SMB/transport");

  if (report_verbosity > 0)
  {
    report =
      '\n  Install path       : ' + path +
      '\n  Installed version  : ' + version +
      '\n  Fixed version      : ' + fixed_version + '\n';
    security_warning(port:port, extra:report);
  }
  else security_warning(port);
}
else exit(0, "Pidgin " + version + " is installed and hence not affected.");