Debian DLA-248-1 : qemu security update (Venom)

2015-06-22T00:00:00
ID DEBIAN_DLA-248.NASL
Type nessus
Reporter Tenable
Modified 2018-07-06T00:00:00

Description

A vulnerability was discovered in the qemu virtualisation solution :

CVE-2015-3456

Jason Geffner discovered a buffer overflow in the emulated floppy disk drive, resulting in the potential execution of arbitrary code.

Despite the end-of-life of qemu support in the old-oldstable distribution (squeeze-lts), this problem has been fixed in version 0.12.5+dfsg-3squeeze4 of the qemu source package due to its severity (the so-called VENOM vulnerability).

Further problems may still be present in the qemu package in the old-oldstable distribution (squeeze-lts) and users who need to rely on qemu are encouraged to upgrade to a newer version of Debian.

We recommend that you upgrade your qemu 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-248-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(84294);
  script_version("2.6");
  script_cvs_date("Date: 2018/07/06 11:26:06");

  script_cve_id("CVE-2015-3456");
  script_bugtraq_id(74640);

  script_name(english:"Debian DLA-248-1 : qemu security update (Venom)");
  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:
"A vulnerability was discovered in the qemu virtualisation solution :

CVE-2015-3456

Jason Geffner discovered a buffer overflow in the emulated floppy disk
drive, resulting in the potential execution of arbitrary code.

Despite the end-of-life of qemu support in the old-oldstable
distribution (squeeze-lts), this problem has been fixed in version
0.12.5+dfsg-3squeeze4 of the qemu source package due to its severity
(the so-called VENOM vulnerability).

Further problems may still be present in the qemu package in the
old-oldstable distribution (squeeze-lts) and users who need to rely on
qemu are encouraged to upgrade to a newer version of Debian.

We recommend that you upgrade your qemu 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/2015/06/msg00014.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze-lts/qemu"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libqemu-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-keymaps");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-system");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-user");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-user-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qemu-utils");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/06/19");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/06/22");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2018 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:"6.0", prefix:"libqemu-dev", reference:"0.12.5+dfsg-3squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"qemu", reference:"0.12.5+dfsg-3squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"qemu-keymaps", reference:"0.12.5+dfsg-3squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"qemu-system", reference:"0.12.5+dfsg-3squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"qemu-user", reference:"0.12.5+dfsg-3squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"qemu-user-static", reference:"0.12.5+dfsg-3squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"qemu-utils", reference:"0.12.5+dfsg-3squeeze4")) 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");