Debian DSA-2394-1 : libxml2 - several vulnerabilities

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-2394. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(57702);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2011-0216", "CVE-2011-2821", "CVE-2011-2834", "CVE-2011-3905", "CVE-2011-3919");
  script_bugtraq_id(48832, 49279, 49658, 51084, 51300);
  script_xref(name:"DSA", value:"2394");

  script_name(english:"Debian DSA-2394-1 : libxml2 - several vulnerabilities");
  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:
"Many security problems have been fixed in libxml2, a popular library
to handle XML data files.

  - CVE-2011-3919 :
    Juri Aedla discovered a heap-based buffer overflow that
    allows remote attackers to cause a denial of service or
    possibly have unspecified other impact via unknown
    vectors.

  - CVE-2011-0216 :
    An Off-by-one error have been discovered that allows
    remote attackers to execute arbitrary code or cause a
    denial of service.

  - CVE-2011-2821 :
    A memory corruption (double free) bug has been
    identified in libxml2's XPath engine. Through it, it is
    possible for an attacker to cause a denial of service or
    possibly have unspecified other impact. This
    vulnerability does not affect the oldstable distribution
    (lenny).

  - CVE-2011-2834 :
    Yang Dingning discovered a double free vulnerability
    related to XPath handling.

  - CVE-2011-3905 :
    An out-of-bounds read vulnerability had been discovered,
    which allows remote attackers to cause a denial of
    service."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=652352"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=643648"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=656377"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-3919"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-0216"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-2821"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-2834"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-3905"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze/libxml2"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2012/dsa-2394"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the libxml2 packages.

For the oldstable distribution (lenny), this problem has been fixed in
version 2.6.32.dfsg-5+lenny5.

For the stable distribution (squeeze), this problem has been fixed in
version 2.7.8.dfsg-2+squeeze2."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  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:debian:debian_linux:libxml2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:5.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2012/01/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/01/27");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  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:"5.0", prefix:"libxml2", reference:"2.6.32.dfsg-5+lenny5")) flag++;
if (deb_check(release:"6.0", prefix:"libxml2", reference:"2.7.8.dfsg-2+squeeze2")) flag++;
if (deb_check(release:"6.0", prefix:"libxml2-dbg", reference:"2.7.8.dfsg-2+squeeze2")) flag++;
if (deb_check(release:"6.0", prefix:"libxml2-dev", reference:"2.7.8.dfsg-2+squeeze2")) flag++;
if (deb_check(release:"6.0", prefix:"libxml2-doc", reference:"2.7.8.dfsg-2+squeeze2")) flag++;
if (deb_check(release:"6.0", prefix:"libxml2-utils", reference:"2.7.8.dfsg-2+squeeze2")) flag++;
if (deb_check(release:"6.0", prefix:"python-libxml2", reference:"2.7.8.dfsg-2+squeeze2")) flag++;
if (deb_check(release:"6.0", prefix:"python-libxml2-dbg", reference:"2.7.8.dfsg-2+squeeze2")) flag++;

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