Debian DLA-599-1 : cracklib2 security update

2016-08-22T00:00:00
ID DEBIAN_DLA-599.NASL
Type nessus
Reporter Tenable
Modified 2018-07-09T00:00:00

Description

It was discovered that there was a stack-based buffer overflow when parsing large GECOS fields in cracklib2, a pro-active password checker library.

For Debian 7 'Wheezy', this issue has been fixed in cracklib2 version 2.8.19-3+deb7u1.

We recommend that you upgrade your cracklib2 packages.

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-599-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(93054);
  script_version("2.5");
  script_cvs_date("Date: 2018/07/09 14:30:26");

  script_cve_id("CVE-2016-6318");

  script_name(english:"Debian DLA-599-1 : cracklib2 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:
"It was discovered that there was a stack-based buffer overflow when
parsing large GECOS fields in cracklib2, a pro-active password checker
library.

For Debian 7 'Wheezy', this issue has been fixed in cracklib2 version
2.8.19-3+deb7u1.

We recommend that you upgrade your cracklib2 packages.

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/2016/08/msg00024.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/cracklib2"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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:cracklib-runtime");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcrack2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcrack2-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-cracklib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-cracklib");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/08/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/08/22");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2018 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:"7.0", prefix:"cracklib-runtime", reference:"2.8.19-3+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libcrack2", reference:"2.8.19-3+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libcrack2-dev", reference:"2.8.19-3+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"python-cracklib", reference:"2.8.19-3+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"python3-cracklib", reference:"2.8.19-3+deb7u1")) 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");