Mandriva Linux Security Advisory : squid (MDVSA-2011:193)

2012-09-06T00:00:00
ID MANDRIVA_MDVSA-2011-193.NASL
Type nessus
Reporter Tenable
Modified 2019-01-02T00:00:00

Description

A vulnerability has been discovered and corrected in squid :

The idnsGrokReply function in Squid before 3.1.16 does not properly free memory, which allows remote attackers to cause a denial of service (daemon abort) via a DNS reply containing a CNAME record that references another CNAME record that contains an empty A record (CVE-2011-4096).

The updated packages have been patched to correct this issue.

                                        
                                            #%NASL_MIN_LEVEL 70103

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Mandriva Linux Security Advisory MDVSA-2011:193. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(61941);
  script_version("1.9");
  script_cvs_date("Date: 2019/01/02 16:37:54");

  script_cve_id("CVE-2011-4096");
  script_bugtraq_id(50449);
  script_xref(name:"MDVSA", value:"2011:193");

  script_name(english:"Mandriva Linux Security Advisory : squid (MDVSA-2011:193)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Mandriva Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A vulnerability has been discovered and corrected in squid :

The idnsGrokReply function in Squid before 3.1.16 does not properly
free memory, which allows remote attackers to cause a denial of
service (daemon abort) via a DNS reply containing a CNAME record that
references another CNAME record that contains an empty A record
(CVE-2011-4096).

The updated packages have been patched to correct this issue."
  );
  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_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:squid");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:squid-cachemgr");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2011");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/12/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/09/06");
  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:"MDK2011", reference:"squid-3.1.15-1.1-mdv2011.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2011", reference:"squid-cachemgr-3.1.15-1.1-mdv2011.0", yank:"mdv")) flag++;


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