Debian: Security Advisory (DSA-3582-1)

# 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("1.3.6.1.4.1.25623.1.0.703582");
  script_cve_id("CVE-2016-0718", "CVE-2016-4472");
  script_tag(name:"creation_date", value:"2016-05-17 22:00:00 +0000 (Tue, 17 May 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:3.1/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:"2016-05-26 17:25:56 +0000 (Thu, 26 May 2016)");

  script_name("Debian: Security Advisory (DSA-3582-1)");
  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=DEB8");

  script_xref(name:"Advisory-ID", value:"DSA-3582-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2016/DSA-3582-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-3582");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'expat' package(s) announced via the DSA-3582-1 advisory.");

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

  script_tag(name:"insight", value:"Gustavo Grieco discovered that Expat, an XML parsing C library, does not properly handle certain kinds of malformed input documents, resulting in buffer overflows during processing and error reporting. A remote attacker can take advantage of this flaw to cause an application using the Expat library to crash, or potentially, to execute arbitrary code with the privileges of the user running the application.

For the stable distribution (jessie), this problem has been fixed in version 2.1.0-6+deb8u2. Additionally this update refreshes the fix for CVE-2015-1283 to avoid relying on undefined behavior.

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

  script_tag(name:"affected", value:"'expat' package(s) on 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 == "DEB8") {

  if(!isnull(res = isdpkgvuln(pkg:"expat", ver:"2.1.0-6+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"lib64expat1", ver:"2.1.0-6+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"lib64expat1-dev", ver:"2.1.0-6+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libexpat1", ver:"2.1.0-6+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libexpat1-dev", ver:"2.1.0-6+deb8u2", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libexpat1-udeb", ver:"2.1.0-6+deb8u2", rls:"DEB8"))) {
    report += res;
  }

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

exit(0);