CentOS 6 : httpd (CESA-2013:0512)

2013-03-10T00:00:00
ID CENTOS_RHSA-2013-0512.NASL
Type nessus
Reporter This script is Copyright (C) 2013-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-05-02T00:00:00

Description

Updated httpd packages that fix two security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having low security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The httpd packages contain the Apache HTTP Server (httpd), which is the namesake project of The Apache Software Foundation.

An input sanitization flaw was found in the mod_negotiation Apache HTTP Server module. A remote attacker able to upload or create files with arbitrary names in a directory that has the MultiViews options enabled, could use this flaw to conduct cross-site scripting attacks against users visiting the site. (CVE-2008-0455, CVE-2012-2687)

It was discovered that mod_proxy_ajp, when used in configurations with mod_proxy in load balancer mode, would mark a back-end server as failed when request processing timed out, even when a previous AJP (Apache JServ Protocol) CPing request was responded to by the back-end. A remote attacker able to make a back-end use an excessive amount of time to process a request could cause mod_proxy to not send requests to back-end AJP servers for the retry timeout period or until all back-end servers were marked as failed. (CVE-2012-4557)

These updated httpd packages include numerous bug fixes and enhancements. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 6.4 Technical Notes, linked to in the References, for information on the most significant of these changes.

All users of httpd are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add these enhancements. After installing the updated packages, the httpd daemon will be restarted automatically.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2013:0512 and 
# CentOS Errata and Security Advisory 2013:0512 respectively.
#

include("compat.inc");

if (description)
{
  script_id(65145);
  script_version("1.11");
  script_cvs_date("Date: 2020/01/06");

  script_cve_id("CVE-2008-0455", "CVE-2012-2687", "CVE-2012-4557");
  script_bugtraq_id(27409, 55131, 56753);
  script_xref(name:"RHSA", value:"2013:0512");

  script_name(english:"CentOS 6 : httpd (CESA-2013:0512)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated httpd packages that fix two security issues, several bugs, and
add various enhancements are now available for Red Hat Enterprise
Linux 6.

The Red Hat Security Response Team has rated this update as having low
security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

The httpd packages contain the Apache HTTP Server (httpd), which is
the namesake project of The Apache Software Foundation.

An input sanitization flaw was found in the mod_negotiation Apache
HTTP Server module. A remote attacker able to upload or create files
with arbitrary names in a directory that has the MultiViews options
enabled, could use this flaw to conduct cross-site scripting attacks
against users visiting the site. (CVE-2008-0455, CVE-2012-2687)

It was discovered that mod_proxy_ajp, when used in configurations with
mod_proxy in load balancer mode, would mark a back-end server as
failed when request processing timed out, even when a previous AJP
(Apache JServ Protocol) CPing request was responded to by the
back-end. A remote attacker able to make a back-end use an excessive
amount of time to process a request could cause mod_proxy to not send
requests to back-end AJP servers for the retry timeout period or until
all back-end servers were marked as failed. (CVE-2012-4557)

These updated httpd packages include numerous bug fixes and
enhancements. Space precludes documenting all of these changes in this
advisory. Users are directed to the Red Hat Enterprise Linux 6.4
Technical Notes, linked to in the References, for information on the
most significant of these changes.

All users of httpd are advised to upgrade to these updated packages,
which contain backported patches to correct these issues and add these
enhancements. After installing the updated packages, the httpd daemon
will be restarted automatically."
  );
  # https://lists.centos.org/pipermail/centos-announce/2013-March/019341.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?d0af05ff"
  );
  # https://lists.centos.org/pipermail/centos-cr-announce/2013-February/000530.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?bf0fdbb9"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected httpd 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:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2012-4557");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(79);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:httpd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:httpd-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:httpd-manual");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:httpd-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mod_ssl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2008/01/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/03/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/03/10");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2020 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:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 6.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 && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-6", reference:"httpd-2.2.15-26.el6.centos")) flag++;
if (rpm_check(release:"CentOS-6", reference:"httpd-devel-2.2.15-26.el6.centos")) flag++;
if (rpm_check(release:"CentOS-6", reference:"httpd-manual-2.2.15-26.el6.centos")) flag++;
if (rpm_check(release:"CentOS-6", reference:"httpd-tools-2.2.15-26.el6.centos")) flag++;
if (rpm_check(release:"CentOS-6", reference:"mod_ssl-2.2.15-26.el6.centos")) flag++;


if (flag)
{
  cr_plugin_caveat = '\n' +
    'NOTE: The security advisory associated with this vulnerability has a\n' +
    'fixed package version that may only be available in the continuous\n' +
    'release (CR) repository for CentOS, until it is present in the next\n' +
    'point release of CentOS.\n\n' +

    'If an equal or higher package level does not exist in the baseline\n' +
    'repository for your major version of CentOS, then updates from the CR\n' +
    'repository will need to be applied in order to address the\n' +
    'vulnerability.\n';
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get() + cr_plugin_caveat
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "httpd / httpd-devel / httpd-manual / httpd-tools / mod_ssl");
}