Debian DSA-2230-1 : qemu-kvm - several vulnerabilities

2011-05-02T00:00:00
ID DEBIAN_DSA-2230.NASL
Type nessus
Reporter Tenable
Modified 2018-11-10T00:00:00

Description

Two vulnerabilities have been discovered in KVM, a solution for full virtualization on x86 hardware :

  • CVE-2011-0011 Setting the VNC password to an empty string silently disabled all authentication.

  • CVE-2011-1750 The virtio-blk driver performed insufficient validation of read/write I/O from the guest instance, which could lead to denial of service or privilege escalation.

The oldstable distribution (lenny) is not affected by this problem.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-2230. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(53605);
  script_version("1.9");
  script_cvs_date("Date: 2018/11/10 11:49:34");

  script_cve_id("CVE-2011-0011", "CVE-2011-1750");
  script_bugtraq_id(45743, 47546);
  script_xref(name:"DSA", value:"2230");

  script_name(english:"Debian DSA-2230-1 : qemu-kvm - several vulnerabilities");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Two vulnerabilities have been discovered in KVM, a solution for full
virtualization on x86 hardware :

  - CVE-2011-0011
    Setting the VNC password to an empty string silently
    disabled all authentication.

  - CVE-2011-1750
    The virtio-blk driver performed insufficient validation
    of read/write I/O from the guest instance, which could
    lead to denial of service or privilege escalation.

The oldstable distribution (lenny) is not affected by this problem."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=611134"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=624177"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-0011"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-1750"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze/qemu-kvm"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2011/dsa-2230"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the qemu-kvm packages.

For the stable distribution (squeeze), this problem has been fixed in
version 0.12.5+dfsg-5+squeeze1."
  );
  script_set_cvss_base_vector("CVSS2#AV:A/AC:M/Au:S/C:C/I:C/A:C");
  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:qemu-kvm");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/05/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/05/02");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2011-2018 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:"6.0", prefix:"kvm", reference:"0.12.5+dfsg-5+squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"qemu-kvm", reference:"0.12.5+dfsg-5+squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"qemu-kvm-dbg", reference:"0.12.5+dfsg-5+squeeze1")) 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");