Debian: Security Advisory (DSA-2542-1)

# SPDX-FileCopyrightText: 2012 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.72171");
  script_cve_id("CVE-2012-2652", "CVE-2012-3515");
  script_tag(name:"creation_date", value:"2012-09-15 08:23:58 +0000 (Sat, 15 Sep 2012)");
  script_version("2024-02-01T14:37:10+0000");
  script_tag(name:"last_modification", value:"2024-02-01 14:37:10 +0000 (Thu, 01 Feb 2024)");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");

  script_name("Debian: Security Advisory (DSA-2542-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2012 Greenbone AG");
  script_family("Debian Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB6");

  script_xref(name:"Advisory-ID", value:"DSA-2542-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2012/DSA-2542-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-2542");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'qemu-kvm' package(s) announced via the DSA-2542-1 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"Multiple vulnerabilities have been discovered in KVM, a full virtualization solution on x86 hardware. The Common Vulnerabilities and Exposures project identifies the following problems:

CVE-2012-2652: The snapshot mode of QEMU (-snapshot) incorrectly handles temporary files used to store the current state, making it vulnerable to symlink attacks (including arbitrary file overwriting and guest information disclosure) due to a race condition.

CVE-2012-3515: QEMU does not properly handle VT100 escape sequences when emulating certain devices with a virtual console backend. An attacker within a guest with access to the vulnerable virtual console could overwrite memory of QEMU and escalate privileges to that of the qemu process.

For the stable distribution (squeeze), these problems have been fixed in version 0.12.5+dfsg-5+squeeze9.

For the testing distribution (wheezy), and the unstable distribution (sid), these problems will been fixed soon.

We recommend that you upgrade your qemu-kvm packages.");

  script_tag(name:"affected", value:"'qemu-kvm' package(s) on Debian 6.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-deb.inc");

release = dpkg_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "DEB6") {

  if(!isnull(res = isdpkgvuln(pkg:"kvm", ver:"1:0.12.5+dfsg-5+squeeze9", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"qemu-kvm", ver:"0.12.5+dfsg-5+squeeze9", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"qemu-kvm-dbg", ver:"0.12.5+dfsg-5+squeeze9", rls:"DEB6"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);