Debian DLA-62-1 : nss security update

2015-03-26T00:00:00
ID DEBIAN_DLA-62.NASL
Type nessus
Reporter Tenable
Modified 2016-05-05T00:00:00

Description

Antoine Delignat-Lavaud from Inria discovered an issue in the way NSS (the Mozilla Network Security Service library) was parsing ASN.1 data used in signatures, making it vulnerable to a signature forgery attack.

An attacker could craft ASN.1 data to forge RSA certificates with a valid certification chain to a trusted CA.

This update fixes this issue for the NSS libraries.

Note that iceweasel, which is also affected by CVE-2014-1568, however has reached end-of-life in Squeeze(-LTS) and thus has not been fixed.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-62-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(82207);
  script_version("$Revision: 1.4 $");
  script_cvs_date("$Date: 2016/05/05 14:49:55 $");

  script_cve_id("CVE-2014-1568");
  script_bugtraq_id(70116, 72178);
  script_osvdb_id(112036);

  script_name(english:"Debian DLA-62-1 : nss security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Antoine Delignat-Lavaud from Inria discovered an issue in the way NSS
(the Mozilla Network Security Service library) was parsing ASN.1 data
used in signatures, making it vulnerable to a signature forgery
attack.

An attacker could craft ASN.1 data to forge RSA certificates with a
valid certification chain to a trusted CA.

This update fixes this issue for the NSS libraries.

Note that iceweasel, which is also affected by CVE-2014-1568, however
has reached end-of-life in Squeeze(-LTS) and thus has not been fixed.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.debian.org/debian-lts-announce/2014/09/msg00019.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze-lts/nss"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:ND");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libnss3-1d");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libnss3-1d-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libnss3-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libnss3-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/09/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/03/26");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2016 Tenable Network Security, Inc.");
  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:"libnss3-1d", reference:"3.12.8-1+squeeze9")) flag++;
if (deb_check(release:"6.0", prefix:"libnss3-1d-dbg", reference:"3.12.8-1+squeeze9")) flag++;
if (deb_check(release:"6.0", prefix:"libnss3-dev", reference:"3.12.8-1+squeeze9")) flag++;
if (deb_check(release:"6.0", prefix:"libnss3-tools", reference:"3.12.8-1+squeeze9")) 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");