Debian DLA-220-1 : dpkg security update

2015-05-18T00:00:00
ID DEBIAN_DLA-220.NASL
Type nessus
Reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc.
Modified 2015-05-18T00:00:00

Description

Jann Horn discovered that the source package integrity verification in dpkg-source can be bypassed via a specially crafted Debian source control file (.dsc). Note that this flaw only affects extraction of local Debian source packages via dpkg-source but not the installation of packages from the Debian archive.

For the oldoldstable distribution (squeeze), this problem has been fixed in version 1.15.12. This also fixes a similar bug discovered by Ansgar Burchardt and a bug in the same area discovered by Roger Leigh.

For the oldstable distribution (wheezy), this problem was fixed in version 1.16.16.

The stable distribution (jessie) was not affected by this problem as it was fixed before release.

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.

                                        
                                            #%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-220-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(83498);
  script_version("2.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2015-0840");
  script_bugtraq_id(74039);

  script_name(english:"Debian DLA-220-1 : dpkg 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:
"Jann Horn discovered that the source package integrity verification in
dpkg-source can be bypassed via a specially crafted Debian source
control file (.dsc). Note that this flaw only affects extraction of
local Debian source packages via dpkg-source but not the installation
of packages from the Debian archive.

For the oldoldstable distribution (squeeze), this problem has been
fixed in version 1.15.12. This also fixes a similar bug discovered by
Ansgar Burchardt and a bug in the same area discovered by Roger Leigh.

For the oldstable distribution (wheezy), this problem was fixed in
version 1.16.16.

The stable distribution (jessie) was not affected by this problem as
it was fixed before release.

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/2015/05/msg00004.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze-lts/dpkg"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N");
  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:dpkg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dpkg-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dselect");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdpkg-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdpkg-perl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/05/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/05/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2020 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:"dpkg", reference:"1.15.12")) flag++;
if (deb_check(release:"6.0", prefix:"dpkg-dev", reference:"1.15.12")) flag++;
if (deb_check(release:"6.0", prefix:"dselect", reference:"1.15.12")) flag++;
if (deb_check(release:"6.0", prefix:"libdpkg-dev", reference:"1.15.12")) flag++;
if (deb_check(release:"6.0", prefix:"libdpkg-perl", reference:"1.15.12")) 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");