Vulnerabilities > CVE-2011-2943 - Denial of Service and Security Bypass vulnerability in Pidgin Libpurple and Pidgin

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


include("compat.inc");


if (description)
{
  script_id(55928);
  script_version("1.7");
  script_cvs_date("Date: 2018/11/15 20:50:28");

  script_cve_id("CVE-2011-2943", "CVE-2011-3184", "CVE-2011-3185");
  script_bugtraq_id(49268);

  script_name(english:"Pidgin < 2.10.0 Multiple Vulnerabilities");
  script_summary(english:"Does a version check");

  script_set_attribute(
    attribute:"synopsis",
    value:
"An instant messaging client installed on the remote Windows host
has multiple vulnerabilities."
  );
  script_set_attribute(
    attribute:"description",
    value:
"The version of Pidgin installed on the remote host is earlier than
2.10.0.  As such, it is potentially affected by the following issues :

  - A code execution vulnerability caused by clicking on a
    file:// URI received in an IM that Pidgin will attempt
    to execute.  This can result in the execution of 
    attacker-controlled code if the file is located on a 
    network share. (CVE-2011-3185)

  - A denial of service in the IRC protocol plugin caused
    by processing a specially crafted nickname when listing
    the set of users. (CVE-2011-2943)

  - A denial of service in the MSN protocol plugin caused
    by incorrect handling of HTTP 100 responses.  This only
    affects users who have enabled the HTTP connection 
    method, which is disabled by default. (CVE-2011-3184)"
  );
  script_set_attribute(attribute:"see_also",value:"https://www.insomniasec.com/home");
  script_set_attribute(attribute:"see_also",value:"https://www.securityfocus.com/archive/1/519391/30/0/threaded");
  script_set_attribute(attribute:"see_also",value:"http://pidgin.im/news/security/?id=53");
  script_set_attribute(attribute:"see_also",value:"http://pidgin.im/news/security/?id=54");
  script_set_attribute(attribute:"see_also",value:"http://pidgin.im/news/security/?id=55");
  script_set_attribute(
    attribute:"solution",
    value:"Upgrade to Pidgin 2.10.0 or later."
  );
 script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
 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:"2011/08/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/08/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/08/22");

  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 = '2.10.0';

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

  if (report_verbosity > 0)
  {
    report =
      '\n  Path               : ' + path +
      '\n  Installed version  : ' + version +
      '\n  Fixed version      : ' + fixed_version + '\n';
    security_hole(port:port, extra:report);
  }
  else security_hole(port);
}
else exit(0, "Pidgin " + version + " is installed and hence 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-2011:132. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(56109);
  script_version("1.12");
  script_cvs_date("Date: 2019/08/02 13:32:54");

  script_cve_id(
    "CVE-2011-2485",
    "CVE-2011-2943",
    "CVE-2011-3184"
  );
  script_bugtraq_id(
    48425,
    49268
  );
  script_xref(name:"MDVSA", value:"2011:132");
  script_xref(name:"MDVSA", value:"2011:132-1");

  script_name(english:"Mandriva Linux Security Advisory : pidgin (MDVSA-2011:132-1)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Mandriva Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Multiple vulnerabilities has been identified and fixed in pidgin :

It was found that the gdk-pixbuf GIF image loader routine
gdk_pixbuf__gif_image_load() did not properly handle certain return
values from its subroutines. A remote attacker could provide a
specially crafted GIF image, which, once opened in Pidgin, would lead
gdk-pixbuf to return a partially initialized pixbuf structure. Using
this structure, possibly containing a huge width and height, could
lead to the application being terminated due to excessive memory use
(CVE-2011-2485).

Certain characters in the nicknames of IRC users can trigger a NULL
pointer dereference in the IRC protocol plugin's handling of responses
to WHO requests. This can cause a crash on some operating systems.
Clients based on libpurple 2.8.0 through 2.9.0 are affected
(CVE-2011-2943).

Incorrect handling of HTTP 100 responses in the MSN protocol plugin
can cause the application to attempt to access memory that it does not
have access to. This only affects users who have turned on the HTTP
connection method for their accounts (it's off by default). This might
only be triggerable by a malicious server and not a malicious peer. We
believe remote code execution is not possible (CVE-2011-3184).

This update provides pidgin 2.10.0, which is not vulnerable to these
issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://pidgin.im/news/security/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/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:mandriva:linux:finch");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:lib64finch0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:lib64purple-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:lib64purple0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:libfinch0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:libpurple-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:libpurple0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:pidgin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:pidgin-bonjour");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:pidgin-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:pidgin-gevolution");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:pidgin-i18n");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:pidgin-meanwhile");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:pidgin-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:pidgin-plugins");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:pidgin-silc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:pidgin-tcl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2009.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2010.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2011");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/09/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/09/07");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2011-2019 Tenable Network Security, Inc.");
  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:"MDK2009.0", reference:"finch-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", cpu:"x86_64", reference:"lib64finch0-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", cpu:"x86_64", reference:"lib64purple-devel-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", cpu:"x86_64", reference:"lib64purple0-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", cpu:"i386", reference:"libfinch0-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", cpu:"i386", reference:"libpurple-devel-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", cpu:"i386", reference:"libpurple0-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", reference:"pidgin-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", reference:"pidgin-bonjour-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", reference:"pidgin-client-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", reference:"pidgin-gevolution-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", reference:"pidgin-i18n-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", reference:"pidgin-meanwhile-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", reference:"pidgin-perl-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", reference:"pidgin-plugins-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", reference:"pidgin-silc-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2009.0", reference:"pidgin-tcl-2.10.0-0.1mdv2009.0", yank:"mdv")) flag++;

if (rpm_check(release:"MDK2010.1", reference:"finch-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", cpu:"x86_64", reference:"lib64finch0-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", cpu:"x86_64", reference:"lib64purple-devel-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", cpu:"x86_64", reference:"lib64purple0-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", cpu:"i386", reference:"libfinch0-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", cpu:"i386", reference:"libpurple-devel-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", cpu:"i386", reference:"libpurple0-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", reference:"pidgin-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", reference:"pidgin-bonjour-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", reference:"pidgin-client-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", reference:"pidgin-gevolution-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", reference:"pidgin-i18n-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", reference:"pidgin-meanwhile-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", reference:"pidgin-perl-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", reference:"pidgin-plugins-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", reference:"pidgin-silc-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2010.1", reference:"pidgin-tcl-2.10.0-0.1mdv2010.2", yank:"mdv")) flag++;

if (rpm_check(release:"MDK2011", reference:"finch-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", cpu:"x86_64", reference:"lib64finch0-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", cpu:"x86_64", reference:"lib64purple-devel-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", cpu:"x86_64", reference:"lib64purple0-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", cpu:"i386", reference:"libfinch0-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", cpu:"i386", reference:"libpurple-devel-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", cpu:"i386", reference:"libpurple0-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", reference:"pidgin-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", reference:"pidgin-bonjour-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", reference:"pidgin-client-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", reference:"pidgin-gevolution-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", reference:"pidgin-i18n-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", reference:"pidgin-meanwhile-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", reference:"pidgin-perl-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", reference:"pidgin-plugins-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", reference:"pidgin-silc-2.10.0-0.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", reference:"pidgin-tcl-2.10.0-0.1-mdv2011.0", yank:"mdv")) 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");