Debian: Security Advisory (DSA-2884-1)

# SPDX-FileCopyrightText: 2014 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("1.3.6.1.4.1.25623.1.0.702884");
  script_cve_id("CVE-2014-2525");
  script_tag(name:"creation_date", value:"2014-03-25 23:00:00 +0000 (Tue, 25 Mar 2014)");
  script_version("2024-02-02T05:06:04+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:04 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");

  script_name("Debian: Security Advisory (DSA-2884-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2014 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=DEB(6|7)");

  script_xref(name:"Advisory-ID", value:"DSA-2884-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2014/DSA-2884-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-2884");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'libyaml' package(s) announced via the DSA-2884-1 advisory.");

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

  script_tag(name:"insight", value:"Ivan Fratric of the Google Security Team discovered a heap-based buffer overflow vulnerability in LibYAML, a fast YAML 1.1 parser and emitter library. A remote attacker could provide a specially-crafted YAML document that, when parsed by an application using libyaml, would cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application.

For the oldstable distribution (squeeze), this problem has been fixed in version 0.1.3-1+deb6u4.

For the stable distribution (wheezy), this problem has been fixed in version 0.1.4-2+deb7u4.

For the unstable distribution (sid), this problem will be fixed soon.

We recommend that you upgrade your libyaml packages.");

  script_tag(name:"affected", value:"'libyaml' package(s) on Debian 6, 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 == "DEB6") {

  if(!isnull(res = isdpkgvuln(pkg:"libyaml-0-2", ver:"0.1.3-1+deb6u4", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libyaml-dev", ver:"0.1.3-1+deb6u4", rls:"DEB6"))) {
    report += res;
  }

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

if(release == "DEB7") {

  if(!isnull(res = isdpkgvuln(pkg:"libyaml-0-2", ver:"0.1.4-2+deb7u4", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libyaml-0-2-dbg", ver:"0.1.4-2+deb7u4", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libyaml-dev", ver:"0.1.4-2+deb7u4", rls:"DEB7"))) {
    report += res;
  }

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

exit(0);