Debian DSA-2884-1 : libyaml - security update

#%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-2884. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(73214);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2014-2525");
  script_bugtraq_id(66478);
  script_xref(name:"DSA", value:"2884");

  script_name(english:"Debian DSA-2884-1 : libyaml - security update");
  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:
"Ivan Fratric of the Google Security Team discovered a heap-based
buffer overflow vulnerability in LibYAML, a fast YAML 1.1 parser and
emitter library. A remote attacker could provide a specially crafted
YAML document that, when parsed by an application using libyaml, would
cause the application to crash or, potentially, execute arbitrary code
with the privileges of the user running the application."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=742732"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze/libyaml"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/libyaml"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2014/dsa-2884"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the libyaml packages.

For the oldstable distribution (squeeze), this problem has been fixed
in version 0.1.3-1+deb6u4.

For the stable distribution (wheezy), this problem has been fixed in
version 0.1.4-2+deb7u4."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/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:debian:debian_linux:libyaml");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/03/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/03/27");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2021 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:"6.0", prefix:"libyaml-0-2", reference:"0.1.3-1+deb6u4")) flag++;
if (deb_check(release:"6.0", prefix:"libyaml-dev", reference:"0.1.3-1+deb6u4")) flag++;
if (deb_check(release:"7.0", prefix:"libyaml-0-2", reference:"0.1.4-2+deb7u4")) flag++;
if (deb_check(release:"7.0", prefix:"libyaml-0-2-dbg", reference:"0.1.4-2+deb7u4")) flag++;
if (deb_check(release:"7.0", prefix:"libyaml-dev", reference:"0.1.4-2+deb7u4")) 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");