Debian: Security Advisory (DSA-4293-1)

# SPDX-FileCopyrightText: 2018 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("1.3.6.1.4.1.25623.1.0.704293");
  script_cve_id("CVE-2018-11468", "CVE-2018-11503", "CVE-2018-11504", "CVE-2018-12495");
  script_tag(name:"creation_date", value:"2018-09-13 22:00:00 +0000 (Thu, 13 Sep 2018)");
  script_version("2024-02-02T05:06:06+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:06 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-07-27 13:46:15 +0000 (Fri, 27 Jul 2018)");

  script_name("Debian: Security Advisory (DSA-4293-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 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=DEB9");

  script_xref(name:"Advisory-ID", value:"DSA-4293-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2018/DSA-4293-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4293");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/discount");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'discount' package(s) announced via the DSA-4293-1 advisory.");

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

  script_tag(name:"insight", value:"Several heap buffer overflows were found in discount, an implementation of the Markdown markup language, that could be triggered with specially crafted Markdown data and would cause discount to read past the end of internal buffers.

For the stable distribution (stretch), these problems have been fixed in version 2.2.2-1+deb9u1.

We recommend that you upgrade your discount packages.

For the detailed security status of discount please refer to its security tracker page at: [link moved to references]");

  script_tag(name:"affected", value:"'discount' package(s) on Debian 9.");

  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 == "DEB9") {

  if(!isnull(res = isdpkgvuln(pkg:"discount", ver:"2.2.2-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libmarkdown2", ver:"2.2.2-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libmarkdown2-dev", ver:"2.2.2-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

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

exit(0);