Debian: Security Advisory (DSA-3512-1)

# SPDX-FileCopyrightText: 2016 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("1.3.6.1.4.1.25623.1.0.703512");
  script_cve_id("CVE-2016-2851");
  script_tag(name:"creation_date", value:"2016-03-08 23:00:00 +0000 (Tue, 08 Mar 2016)");
  script_version("2024-02-02T05:06:05+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:05 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2016-04-08 19:58:52 +0000 (Fri, 08 Apr 2016)");

  script_name("Debian: Security Advisory (DSA-3512-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 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(7|8)");

  script_xref(name:"Advisory-ID", value:"DSA-3512-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2016/DSA-3512-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-3512");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'libotr' package(s) announced via the DSA-3512-1 advisory.");

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

  script_tag(name:"insight", value:"Markus Vervier of X41 D-Sec GmbH discovered an integer overflow vulnerability in libotr, an off-the-record (OTR) messaging library, in the way how the sizes of portions of incoming messages were stored. A remote attacker can exploit this flaw by sending crafted messages to an application that is using libotr to perform denial of service attacks (application crash), or potentially, execute arbitrary code with the privileges of the user running the application.

For the oldstable distribution (wheezy), this problem has been fixed in version 3.2.1-1+deb7u2.

For the stable distribution (jessie), this problem has been fixed in version 4.1.0-2+deb8u1.

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

  script_tag(name:"affected", value:"'libotr' package(s) on Debian 7, Debian 8.");

  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:"libotr2", ver:"3.2.1-1+deb7u2", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libotr2-bin", ver:"3.2.1-1+deb7u2", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libotr2-dev", ver:"3.2.1-1+deb7u2", rls:"DEB7"))) {
    report += res;
  }

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

if(release == "DEB8") {

  if(!isnull(res = isdpkgvuln(pkg:"libotr5", ver:"4.1.0-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libotr5-bin", ver:"4.1.0-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libotr5-dev", ver:"4.1.0-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

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

exit(0);