Debian: Security Advisory (DLA-764-1)

# SPDX-FileCopyrightText: 2023 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("1.3.6.1.4.1.25623.1.1.1.2.2016.764");
  script_cve_id("CVE-2016-9911", "CVE-2016-9921", "CVE-2016-9922");
  script_tag(name:"creation_date", value:"2023-03-08 12:56:44 +0000 (Wed, 08 Mar 2023)");
  script_version("2024-02-02T05:06:10+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:10 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"4.9");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:N/I:N/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-12-14 20:02:26 +0000 (Mon, 14 Dec 2020)");

  script_name("Debian: Security Advisory (DLA-764-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2023 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=DEB7");

  script_xref(name:"Advisory-ID", value:"DLA-764-1");
  script_xref(name:"URL", value:"https://www.debian.org/lts/security/2016/DLA-764-1");
  script_xref(name:"URL", value:"https://wiki.debian.org/LTS");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'qemu' package(s) announced via the DLA-764-1 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 found in QEMU:

CVE-2016-9911

Quick Emulator (Qemu) built with the USB EHCI Emulation support is vulnerable to a memory leakage issue. It could occur while processing packet data in ehci_init_transfer. A guest user/ process could use this issue to leak host memory, resulting in DoS for a host.

CVE-2016-9921 / CVE-2016-9922 Quick emulator (Qemu) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to a divide by zero issue. It could occur while copying VGA data when cirrus graphics mode was set to be VGA. A privileged user inside guest could use this flaw to crash the Qemu process instance on the host, resulting in DoS.

For Debian 7 Wheezy, these problems have been fixed in version 1.1.2+dfsg-6+deb7u19.

We recommend that you upgrade your qemu packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references]");

  script_tag(name:"affected", value:"'qemu' package(s) on Debian 7.");

  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 == "DEB7") {

  if(!isnull(res = isdpkgvuln(pkg:"qemu", ver:"1.1.2+dfsg-6+deb7u19", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"qemu-keymaps", ver:"1.1.2+dfsg-6+deb7u19", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"qemu-system", ver:"1.1.2+dfsg-6+deb7u19", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"qemu-user", ver:"1.1.2+dfsg-6+deb7u19", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"qemu-user-static", ver:"1.1.2+dfsg-6+deb7u19", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"qemu-utils", ver:"1.1.2+dfsg-6+deb7u19", rls:"DEB7"))) {
    report += res;
  }

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

exit(0);