Debian DLA-601-1 : quagga security update

2016-08-29T00:00:00
ID DEBIAN_DLA-601.NASL
Type nessus
Reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2016-08-29T00:00:00

Description

The quagga package installs world readable sensitive files in /etc/quagga, and might be subject to denial of service because of lacking packet size checks.

CVE-2016-4036

The quagga package before 0.99.23-2.6.1 uses weak permissions for /etc/quagga, which allows local users to obtain sensitive information by reading files in the directory.

CVE-2016-4049

The bgp_dump_routes_func function in bgpd/bgp_dump.c in Quagga does not perform size checks when dumping data, which might allow remote attackers to cause a denial of service (assertion failure and daemon crash) via a large BGP packet.

For Debian 7

                                        
                                            #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-601-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(93130);
  script_version("2.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2016-4036", "CVE-2016-4049");

  script_name(english:"Debian DLA-601-1 : quagga 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:
"The quagga package installs world readable sensitive files in
/etc/quagga, and might be subject to denial of service because of
lacking packet size checks.

CVE-2016-4036

The quagga package before 0.99.23-2.6.1 uses weak permissions for
/etc/quagga, which allows local users to obtain sensitive information
by reading files in the directory.

CVE-2016-4049

The bgp_dump_routes_func function in bgpd/bgp_dump.c in Quagga does
not perform size checks when dumping data, which might allow remote
attackers to cause a denial of service (assertion failure and daemon
crash) via a large BGP packet.

For Debian 7 'Wheezy', these problems have been fixed in version
0.99.22.4-1+wheezy3.

We recommend that you upgrade your quagga 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/msg00026.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/quagga"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Upgrade the affected quagga, quagga-dbg, and quagga-doc packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:quagga");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:quagga-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:quagga-doc");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/08/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/08/29");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 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:"7.0", prefix:"quagga", reference:"0.99.22.4-1+wheezy3")) flag++;
if (deb_check(release:"7.0", prefix:"quagga-dbg", reference:"0.99.22.4-1+wheezy3")) flag++;
if (deb_check(release:"7.0", prefix:"quagga-doc", reference:"0.99.22.4-1+wheezy3")) 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");