RHEL 3 / 4 / 5 : libxml2 (RHSA-2008:0884)

2008-09-12T00:00:00
ID REDHAT-RHSA-2008-0884.NASL
Type nessus
Reporter This script is Copyright (C) 2008-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-07-02T00:00:00

Description

Updated libxml2 packages that fix a security issue are now available for Red Hat Enterprise Linux 3, 4, and 5.

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

The libxml2 packages provide a library that allows you to manipulate XML files. It includes support to read, modify, and write XML and HTML files.

A heap-based buffer overflow flaw was found in the way libxml2 handled long XML entity names. If an application linked against libxml2 processed untrusted malformed XML content, it could cause the application to crash or, possibly, execute arbitrary code. (CVE-2008-3529)

All users of libxml2 are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue.

                                        
                                            #%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-2008:0884. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(34190);
  script_version ("1.24");
  script_cvs_date("Date: 2019/10/25 13:36:13");

  script_cve_id("CVE-2008-3529");
  script_xref(name:"RHSA", value:"2008:0884");

  script_name(english:"RHEL 3 / 4 / 5 : libxml2 (RHSA-2008:0884)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated libxml2 packages that fix a security issue are now available
for Red Hat Enterprise Linux 3, 4, and 5.

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

The libxml2 packages provide a library that allows you to manipulate
XML files. It includes support to read, modify, and write XML and HTML
files.

A heap-based buffer overflow flaw was found in the way libxml2 handled
long XML entity names. If an application linked against libxml2
processed untrusted malformed XML content, it could cause the
application to crash or, possibly, execute arbitrary code.
(CVE-2008-3529)

All users of libxml2 are advised to upgrade to these updated packages,
which contain a backported patch to resolve this issue."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2008-3529"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2008:0884"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Update the affected libxml2, libxml2-devel and / or libxml2-python
packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_cwe_id(119);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2-python");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:4.7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5.2");

  script_set_attribute(attribute:"vuln_publication_date", value:"2008/09/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2008/09/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2008/09/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2008-2019 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|4|5)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 3.x / 4.x / 5.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-2008:0884";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      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:"libxml2-2.5.10-13")) flag++;

  if (rpm_check(release:"RHEL3", reference:"libxml2-devel-2.5.10-13")) flag++;

  if (rpm_check(release:"RHEL3", reference:"libxml2-python-2.5.10-13")) flag++;


  if (rpm_check(release:"RHEL4", reference:"libxml2-2.6.16-12.5")) flag++;

  if (rpm_check(release:"RHEL4", reference:"libxml2-devel-2.6.16-12.5")) flag++;

  if (rpm_check(release:"RHEL4", reference:"libxml2-python-2.6.16-12.5")) flag++;


  if (rpm_check(release:"RHEL5", reference:"libxml2-2.6.26-2.1.2.6")) flag++;

  if (rpm_check(release:"RHEL5", reference:"libxml2-devel-2.6.26-2.1.2.6")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"i386", reference:"libxml2-python-2.6.26-2.1.2.6")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"libxml2-python-2.6.26-2.1.2.6")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"libxml2-python-2.6.26-2.1.2.6")) flag++;


  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      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, "libxml2 / libxml2-devel / libxml2-python");
  }
}