Vulnerabilities > CVE-2009-2621 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Squid-Cache Squid

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
low complexity
squid-cache
CWE-119
nessus
NVD
Published: 2009-07-28
Updated: 2009-08-12

Summary

Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 does not properly enforce "buffer limits and related bound checks," which allows remote attackers to cause a denial of service via (1) an incomplete request or (2) a request with a large header size, related to (a) HttpMsg.cc and (b) client_side.cc.

Vulnerable Configurations

Part Description Count
Application
Squid-Cache
29

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_2_SQUID-100318.NASL
    descriptionThe following vulnerabilities have been fixed in squid : - CVE-2009-2855: DoS via special crafted auth header - CVE-2010-0308: DoS via invalid DoS header - CVE-2009-2622: DoS in squid3 via broken HTTP handling - CVE-2009-2621: DoS in squid3 via not enforced
    last seen2020-06-01
    modified2020-06-02
    plugin id45129
    published2010-03-23
    reporterThis script is Copyright (C) 2010-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/45129
    titleopenSUSE Security Update : squid (squid-2144)
    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 squid-2144.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(45129);
  script_version("1.8");
  script_cvs_date("Date: 2019/10/25 13:36:39");

  script_cve_id("CVE-2009-2621", "CVE-2009-2622", "CVE-2009-2855", "CVE-2010-0308");

  script_name(english:"openSUSE Security Update : squid (squid-2144)");
  script_summary(english:"Check for the squid-2144 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The following vulnerabilities have been fixed in squid :

  - CVE-2009-2855: DoS via special crafted auth header

  - CVE-2010-0308: DoS via invalid DoS header

  - CVE-2009-2622: DoS in squid3 via broken HTTP handling

  - CVE-2009-2621: DoS in squid3 via not enforced 'buffer
    limits and related bound checks'"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=525774"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=576087"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=577347"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected squid packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_cwe_id(20, 119);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:squid");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:squid-beta");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:squid3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:11.2");

  script_set_attribute(attribute:"patch_publication_date", value:"2010/03/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2010/03/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2010-2019 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 !~ "^(SUSE11\.2)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "11.2", 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:"SUSE11.2", reference:"squid-2.7.STABLE6-2.5.2") ) flag++;
if ( rpm_check(release:"SUSE11.2", reference:"squid-beta-3.0-448.5.1") ) flag++;
if ( rpm_check(release:"SUSE11.2", reference:"squid3-3.0.STABLE18-3.5.1") ) 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, "squid");
}
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2009-8327.NASL
    descriptionFixes several denial of service issues which could allow an attacker to stop the Squid service. CVE-2009-2621, CVE-2009-2622 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 id40628
    published2009-08-20
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/40628
    titleFedora 10 : squid-3.0.STABLE18-1.fc10 (2009-8327)
    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 2009-8327.
#

include("compat.inc");

if (description)
{
  script_id(40628);
  script_version ("1.14");
  script_cvs_date("Date: 2019/08/02 13:32:30");

  script_cve_id("CVE-2009-2621", "CVE-2009-2622");
  script_bugtraq_id(35812);
  script_xref(name:"FEDORA", value:"2009-8327");

  script_name(english:"Fedora 10 : squid-3.0.STABLE18-1.fc10 (2009-8327)");
  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:
"Fixes several denial of service issues which could allow an attacker
to stop the Squid service. CVE-2009-2621, CVE-2009-2622

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."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=514013"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2009-August/028054.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?1d957992"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected squid package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(20, 119);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:squid");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:10");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/08/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/08/20");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2019 Tenable Network Security, Inc.");
  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:"^10([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 10.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:"FC10", reference:"squid-3.0.STABLE18-1.fc10")) 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, "squid");
}
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_SQUID-100316.NASL
    descriptionThe following vulnerabilities have been fixed in squid : - DoS via special crafted auth header. (CVE-2009-2855) - DoS via invalid DoS header. (CVE-2010-0308)
    last seen2020-06-01
    modified2020-06-02
    plugin id45131
    published2010-03-23
    reporterThis script is Copyright (C) 2010-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/45131
    titleSuSE 11 Security Update : squid (SAT Patch Number 2143)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from SuSE 11 update information. The text itself is
# copyright (C) Novell, Inc.
#

if (NASL_LEVEL < 3000) exit(0);

include("compat.inc");

if (description)
{
  script_id(45131);
  script_version("1.11");
  script_cvs_date("Date: 2019/10/25 13:36:40");

  script_cve_id("CVE-2009-2621", "CVE-2009-2622", "CVE-2009-2855", "CVE-2010-0308");

  script_name(english:"SuSE 11 Security Update : squid (SAT Patch Number 2143)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SuSE 11 host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The following vulnerabilities have been fixed in squid :

  - DoS via special crafted auth header. (CVE-2009-2855)

  - DoS via invalid DoS header. (CVE-2010-0308)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=576087"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=577347"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2009-2621.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2009-2622.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2009-2855.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2010-0308.html"
  );
  script_set_attribute(attribute:"solution", value:"Apply SAT patch number 2143.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_cwe_id(20, 119);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:11:squid");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11");

  script_set_attribute(attribute:"patch_publication_date", value:"2010/03/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2010/03/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2010-2019 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/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)11") audit(AUDIT_OS_NOT, "SuSE 11");
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 11", cpu);

pl = get_kb_item("Host/SuSE/patchlevel");
if (pl) audit(AUDIT_OS_NOT, "SuSE 11.0");


flag = 0;
if (rpm_check(release:"SLES11", sp:0, reference:"squid-2.7.STABLE5-2.4.1")) 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");
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2009-8324.NASL
    descriptionFixes several denial of service issues which could allow an attacker to stop the Squid service. CVE-2009-2621, CVE-2009-2622 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 id40627
    published2009-08-20
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/40627
    titleFedora 11 : squid-3.0.STABLE18-1.fc11 (2009-8324)
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201110-24.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201110-24 (Squid: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Squid. Please review the CVE identifiers referenced below for details. Impact : Remote unauthenticated attackers may be able to execute arbitrary code with the privileges of the Squid process or cause a Denial of Service. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id56658
    published2011-10-27
    reporterThis script is Copyright (C) 2011-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/56658
    titleGLSA-201110-24 : Squid: Multiple vulnerabilities
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_0_SQUID-100316.NASL
    descriptionThe following vulnerabilities have been fixed in squid : - CVE-2009-2855: DoS via special crafted auth header - CVE-2010-0308: DoS via invalid DoS header - CVE-2009-2622: DoS in squid3 via broken HTTP handling - CVE-2009-2621: DoS in squid3 via not enforced
    last seen2020-06-01
    modified2020-06-02
    plugin id45126
    published2010-03-23
    reporterThis script is Copyright (C) 2010-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/45126
    titleopenSUSE Security Update : squid (squid-2144)
  • NASL familyFirewalls
    NASL idSQUID_3_0_16.NASL
    descriptionAccording to its banner, the version of the Squid proxy caching server installed on the remote host is older than 3.0.STABLE17 or 3.1.0.12. Such versions reportedly use incorrect bounds checking when processing some requests or responses. Squid-2.x releases are not vulnerable.
    last seen2020-06-01
    modified2020-06-02
    plugin id40420
    published2009-07-29
    reporterThis script is Copyright (C) 2009-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/40420
    titleSquid 3.0.STABLE16 / 3.10.11
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_1_SQUID-100318.NASL
    descriptionThe following vulnerabilities have been fixed in squid : - CVE-2009-2855: DoS via special crafted auth header - CVE-2010-0308: DoS via invalid DoS header - CVE-2009-2622: DoS in squid3 via broken HTTP handling - CVE-2009-2621: DoS in squid3 via not enforced
    last seen2020-06-01
    modified2020-06-02
    plugin id45127
    published2010-03-23
    reporterThis script is Copyright (C) 2010-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/45127
    titleopenSUSE Security Update : squid (squid-2144)
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_E1156E907AD611DEB26A0048543D60CE.NASL
    descriptionSquid security advisory 2009:2 reports : Due to incorrect buffer limits and related bound checks Squid is vulnerable to a denial of service attack when processing specially crafted requests or responses. Due to incorrect data validation Squid is vulnerable to a denial of service attack when processing specially crafted responses. These problems allow any trusted client or external server to perform a denial of service attack on the Squid service. Squid-2.x releases are not affected.
    last seen2020-06-01
    modified2020-06-02
    plugin id40396
    published2009-07-28
    reporterThis script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/40396
    titleFreeBSD : squid -- several remote denial of service vulnerabilities (e1156e90-7ad6-11de-b26a-0048543d60ce)
  • NASL familyMandriva Local Security Checks
    NASL idMANDRIVA_MDVSA-2009-161.NASL
    descriptionMultiple vulnerabilities has been found and corrected in squid : Due to incorrect buffer limits and related bound checks Squid is vulnerable to a denial of service attack when processing specially crafted requests or responses (CVE-2009-2621). Due to incorrect data validation Squid is vulnerable to a denial of service attack when processing specially crafted responses (CVE-2009-2622). This update provides fixes for these vulnerabilities. Update : Additional upstream security patches were applied : Debug warnings fills up the logs. Upstream Bug 2728: regression: assertion failed: http.cc:705: !eof
    last seen2020-06-01
    modified2020-06-02
    plugin id40399
    published2009-07-28
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/40399
    titleMandriva Linux Security Advisory : squid (MDVSA-2009:161-1)

Statements

contributorTomas Hoger
lastmodified2009-08-06
organizationRed Hat
statementNot vulnerable. This issue did not affect the versions of squid as shipped with Red Hat Enterprise Linux 3, 4, or 5.

References