Vulnerabilities > CVE-2011-2766 - Improper Authentication vulnerability in multiple products

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
fast-cgi-project
debian
CWE-287
nessus
NVD
Published: 2011-09-23
Updated: 2020-12-08

Summary

The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by CGI::Fast, uses environment variable values from one request during processing of a later request, which allows remote attackers to bypass authentication via crafted HTTP headers.

Vulnerable Configurations

Part Description Count
Application
Fast_Cgi_Project
7
OS
Debian
3

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Authentication Abuse
    An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker. This attack may exploit assumptions made by the target's authentication procedures, such as assumptions regarding trust relationships or assumptions regarding the generation of secret values. This attack differs from Authentication Bypass attacks in that Authentication Abuse allows the attacker to be certified as a valid user through illegitimate means, while Authentication Bypass allows the user to access protected material without ever being certified as an authenticated user. This attack does not rely on prior sessions established by successfully authenticating users, as relied upon for the "Exploitation of Session Variables, Resource IDs and other Trusted Credentials" attack patterns.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Utilizing REST's Trust in the System Resource to Register Man in the Middle
    This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to place man in the middle once SSL is terminated. Rest applications premise is that they leverage existing infrastructure to deliver web services functionality. An example of this is a Rest application that uses HTTP Get methods and receives a HTTP response with an XML document. These Rest style web services are deployed on existing infrastructure such as Apache and IIS web servers with no SOAP stack required. Unfortunately from a security standpoint, there frequently is no interoperable identity security mechanism deployed, so Rest developers often fall back to SSL to deliver security. In large data centers, SSL is typically terminated at the edge of the network - at the firewall, load balancer, or router. Once the SSL is terminated the HTTP request is in the clear (unless developers have hashed or encrypted the values, but this is rare). The attacker can utilize a sniffer such as Wireshark to snapshot the credentials, such as username and password that are passed in the clear once SSL is terminated. Once the attacker gathers these credentials, they can submit requests to the web service provider just as authorized user do. There is not typically an authentication on the client side, beyond what is passed in the request itself so once this is compromised, then this is generally sufficient to compromise the service's authentication scheme.
  • Man in the Middle Attack
    This type of attack targets the communication between two components (typically client and server). The attacker places himself in the communication channel between the two components. Whenever one component attempts to communicate with the other (data flow, authentication challenges, etc.), the data first goes to the attacker, who has the opportunity to observe or alter it, and it is then passed on to the other component as if it was never intercepted. This interposition is transparent leaving the two compromised components unaware of the potential corruption or leakage of their communications. The potential for Man-in-the-Middle attacks yields an implicit lack of trust in communication or identify between two components.

Nessus

  • NASL familyAmazon Linux Local Security Checks
    NASL idALA_ALAS-2011-05.NASL
    descriptionThe MITRE CVE database describes CVE-2011-2766 as : The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by CGI::Fast, uses environment variable values from one request during processing of a later request, which allows remote attackers to bypass authentication via crafted HTTP headers.
    last seen2020-06-01
    modified2020-06-02
    plugin id69564
    published2013-09-04
    reporterThis script is Copyright (C) 2013-2015 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/69564
    titleAmazon Linux AMI : perl-FCGI (ALAS-2011-05)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2011-05.
#

include("compat.inc");

if (description)
{
  script_id(69564);
  script_version("$Revision: 1.4 $");
  script_cvs_date("$Date: 2015/01/30 14:43:52 $");

  script_cve_id("CVE-2011-2766");
  script_xref(name:"ALAS", value:"2011-05");

  script_name(english:"Amazon Linux AMI : perl-FCGI (ALAS-2011-05)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Amazon Linux AMI host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The MITRE CVE database describes CVE-2011-2766 as :

The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by
CGI::Fast, uses environment variable values from one request during
processing of a later request, which allows remote attackers to bypass
authentication via crafted HTTP headers."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://admin.fedoraproject.org/updates/perl-FCGI-0.74-1.fc15"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2011-5.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum upgrade perl-FCGI' to upgrade your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:perl-FCGI");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:perl-FCGI-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/10/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/09/04");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2015 Tenable Network Security, Inc.");
  script_family(english:"Amazon Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/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/AmazonLinux/release")) audit(AUDIT_OS_NOT, "Amazon Linux AMI");
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (rpm_check(release:"ALA", reference:"perl-FCGI-0.74-1.0.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"perl-FCGI-debuginfo-0.74-1.0.amzn1")) 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, "perl-FCGI / perl-FCGI-debuginfo");
}
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-2327.NASL
    descriptionFerdinand Smit discovered that FCGI, a Perl module for writing FastCGI applications, is incorrectly restoring environment variables of a prior request in subsequent requests. In some cases this may lead to authentication bypasses or worse. The oldstable distribution (lenny) is not affected by this problem.
    last seen2020-03-17
    modified2011-10-25
    plugin id56623
    published2011-10-25
    reporterThis script is Copyright (C) 2011-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/56623
    titleDebian DSA-2327-1 : libfcgi-perl - authentication bypass
    code
    #%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-2327. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(56623);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2011-2766");
  script_bugtraq_id(49549);
  script_xref(name:"DSA", value:"2327");

  script_name(english:"Debian DSA-2327-1 : libfcgi-perl - authentication bypass");
  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:
"Ferdinand Smit discovered that FCGI, a Perl module for writing FastCGI
applications, is incorrectly restoring environment variables of a
prior request in subsequent requests. In some cases this may lead to
authentication bypasses or worse.

The oldstable distribution (lenny) is not affected by this problem."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze/libfcgi-perl"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2011/dsa-2327"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the libfcgi-perl packages.

For the stable distribution (squeeze), this problem has been fixed in
version 0.71-1+squeeze1."
  );
  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:debian:debian_linux:libfcgi-perl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/10/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/10/25");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2011-2020 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:"libfcgi-perl", reference:"0.71-1+squeeze1")) 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_2011-13236.NASL
    descriptionThis update to the latest upstream version resolves CVE-2011-2766 - stop leaking information across requests when using the deprecated and undocumented old FCGI interface. This update resolves CVE-2011-2766 and includes several additional fixes. See the upstream [changelog](http://cpansearch.perl.org/src/FLORA/FCGI-0.73/ChangeLog) for further details. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora 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 id56368
    published2011-10-03
    reporterThis script is Copyright (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/56368
    titleFedora 14 : perl-FCGI-0.74-1.fc14 (2011-13236)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2011-13236.
#

include("compat.inc");

if (description)
{
  script_id(56368);
  script_version("1.8");
  script_cvs_date("Date: 2019/08/02 13:32:34");

  script_cve_id("CVE-2011-2766");
  script_xref(name:"FEDORA", value:"2011-13236");

  script_name(english:"Fedora 14 : perl-FCGI-0.74-1.fc14 (2011-13236)");
  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:
"This update to the latest upstream version resolves CVE-2011-2766 -
stop leaking information across requests when using the deprecated and
undocumented old FCGI interface.

This update resolves CVE-2011-2766 and includes several additional
fixes. See the upstream
[changelog](http://cpansearch.perl.org/src/FLORA/FCGI-0.73/ChangeLog)
for further details.

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  # http://cpansearch.perl.org/src/FLORA/FCGI-0.73/ChangeLog
  script_set_attribute(
    attribute:"see_also",
    value:"https://fastapi.metacpan.org/source/FLORA/FCGI-0.73/ChangeLog"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=736604"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2011-October/067067.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?899cbd53"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected perl-FCGI package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:perl-FCGI");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:14");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/09/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/10/03");
  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:"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 = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^14([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 14.x", "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:"FC14", reference:"perl-FCGI-0.74-1.fc14")) 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, "perl-FCGI");
}
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2011-102.NASL
    description - added FastCGI-fix_deprecated_api.patch: (bnc#735882) Fixes an issue where CGI.pm received CGI variables from previous requests. CVE-2011-2766
    last seen2020-06-01
    modified2020-06-02
    plugin id74516
    published2014-06-13
    reporterThis script is Copyright (C) 2014-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/74516
    titleopenSUSE Security Update : FastCGI (openSUSE-2011-102)
    code
    #%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-2011-102.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(74516);
  script_version("1.3");
  script_cvs_date("Date: 2019/10/25 13:36:40");

  script_cve_id("CVE-2011-2766");

  script_name(english:"openSUSE Security Update : FastCGI (openSUSE-2011-102)");
  script_summary(english:"Check for the openSUSE-2011-102 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"  - added FastCGI-fix_deprecated_api.patch: (bnc#735882)
    Fixes an issue where CGI.pm received CGI variables from
    previous requests. CVE-2011-2766"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=735882"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected FastCGI packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:FastCGI");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:FastCGI-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:FastCGI-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:FastCGI-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:perl-FastCGI");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:perl-FastCGI-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:12.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/12/22");
  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) 2014-2019 Tenable Network Security, Inc.");
  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\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "12.1", 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 !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE12.1", reference:"FastCGI-2.4.0-155.3.1") ) flag++;
if ( rpm_check(release:"SUSE12.1", reference:"FastCGI-debuginfo-2.4.0-155.3.1") ) flag++;
if ( rpm_check(release:"SUSE12.1", reference:"FastCGI-debugsource-2.4.0-155.3.1") ) flag++;
if ( rpm_check(release:"SUSE12.1", reference:"FastCGI-devel-2.4.0-155.3.1") ) flag++;
if ( rpm_check(release:"SUSE12.1", reference:"perl-FastCGI-2.4.0-155.3.1") ) flag++;
if ( rpm_check(release:"SUSE12.1", reference:"perl-FastCGI-debuginfo-2.4.0-155.3.1") ) 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, "FastCGI / FastCGI-debuginfo / FastCGI-debugsource / FastCGI-devel / etc");
}
  • NASL familyMandriva Local Security Checks
    NASL idMANDRIVA_MDVSA-2012-001.NASL
    descriptionA vulnerability has been found and corrected in fcgi : The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by CGI::Fast, uses environment variable values from one request during processing of a later request, which allows remote attackers to bypass authentication via crafted HTTP headers (CVE-2011-2766). The updated packages have been patched to correct this issue.
    last seen2020-06-01
    modified2020-06-02
    plugin id57428
    published2012-01-03
    reporterThis script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/57428
    titleMandriva Linux Security Advisory : fcgi (MDVSA-2012:001)
    code
    #%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-2012:001. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(57428);
  script_version("1.8");
  script_cvs_date("Date: 2019/08/02 13:32:54");

  script_cve_id("CVE-2011-2766");
  script_bugtraq_id(49549);
  script_xref(name:"MDVSA", value:"2012:001");

  script_name(english:"Mandriva Linux Security Advisory : fcgi (MDVSA-2012:001)");
  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:
"A vulnerability has been found and corrected in fcgi :

The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by
CGI::Fast, uses environment variable values from one request during
processing of a later request, which allows remote attackers to bypass
authentication via crafted HTTP headers (CVE-2011-2766).

The updated packages have been patched to correct this issue."
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected perl-FCGI 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_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:perl-FCGI");
  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:"2012/01/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/01/03");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2019 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:"MDK2010.1", reference:"perl-FCGI-0.710.0-1.1mdv2010.2", yank:"mdv")) flag++;

if (rpm_check(release:"MDK2011", reference:"perl-FCGI-0.730.0-1.1-mdv2011.0", yank:"mdv")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2011-13230.NASL
    descriptionThis update to the latest upstream version resolves CVE-2011-2766 - stop leaking information across requests when using the deprecated and undocumented old FCGI interface. This update resolves CVE-2011-2766 and includes several additional fixes. See the upstream [changelog](http://cpansearch.perl.org/src/FLORA/FCGI-0.73/ChangeLog) for further details. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora 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 id56366
    published2011-10-03
    reporterThis script is Copyright (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/56366
    titleFedora 15 : perl-FCGI-0.74-1.fc15 (2011-13230)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2011-13230.
#

include("compat.inc");

if (description)
{
  script_id(56366);
  script_version("1.8");
  script_cvs_date("Date: 2019/08/02 13:32:34");

  script_cve_id("CVE-2011-2766");
  script_xref(name:"FEDORA", value:"2011-13230");

  script_name(english:"Fedora 15 : perl-FCGI-0.74-1.fc15 (2011-13230)");
  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:
"This update to the latest upstream version resolves CVE-2011-2766 -
stop leaking information across requests when using the deprecated and
undocumented old FCGI interface.

This update resolves CVE-2011-2766 and includes several additional
fixes. See the upstream
[changelog](http://cpansearch.perl.org/src/FLORA/FCGI-0.73/ChangeLog)
for further details.

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  # http://cpansearch.perl.org/src/FLORA/FCGI-0.73/ChangeLog
  script_set_attribute(
    attribute:"see_also",
    value:"https://fastapi.metacpan.org/source/FLORA/FCGI-0.73/ChangeLog"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=736604"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2011-October/067087.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?f94a1064"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected perl-FCGI package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:perl-FCGI");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:15");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/09/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/10/03");
  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:"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 = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^15([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 15.x", "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:"FC15", reference:"perl-FCGI-0.74-1.fc15")) 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, "perl-FCGI");
}
  • NASL familyAmazon Linux Local Security Checks
    NASL idALA_ALAS-2011-5.NASL
    descriptionThe FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by CGI::Fast, uses environment variable values from one request during processing of a later request, which allows remote attackers to bypass authentication via crafted HTTP headers.
    last seen2020-06-01
    modified2020-06-02
    plugin id78266
    published2014-10-12
    reporterThis script is Copyright (C) 2014-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/78266
    titleAmazon Linux AMI : perl-FCGI (ALAS-2011-5)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2011-13130.NASL
    descriptionThis update to the latest upstream version resolves CVE-2011-2766 - stop leaking information across requests when using the deprecated and undocumented old FCGI interface. This update resolves CVE-2011-2766. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora 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 id56363
    published2011-10-03
    reporterThis script is Copyright (C) 2011-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/56363
    titleFedora 16 : perl-FCGI-0.74-1.fc16 (2011-13130)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_4_FASTCGI-111222.NASL
    descriptionThis update fixes the following security issues : - 735882: FastCGI: bypass authentication (CVE-2011-2766)
    last seen2020-06-01
    modified2020-06-02
    plugin id75828
    published2014-06-13
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/75828
    titleopenSUSE Security Update : FastCGI (openSUSE-SU-2012:0004-1)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_3_FASTCGI-111222.NASL
    descriptionThis update fixes the following security issues : - 735882: FastCGI: bypass authentication (CVE-2011-2766)
    last seen2020-06-01
    modified2020-06-02
    plugin id75486
    published2014-06-13
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/75486
    titleopenSUSE Security Update : FastCGI (openSUSE-SU-2012:0004-1)

References