Debian: Security Advisory (DSA-3789-1)

# SPDX-FileCopyrightText: 2017 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("1.3.6.1.4.1.25623.1.0.703789");
  script_cve_id("CVE-2016-10195", "CVE-2016-10196", "CVE-2016-10197");
  script_tag(name:"creation_date", value:"2017-02-14 23:00:00 +0000 (Tue, 14 Feb 2017)");
  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:"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:"2017-03-21 14:29:54 +0000 (Tue, 21 Mar 2017)");

  script_name("Debian: Security Advisory (DSA-3789-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 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-3789-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2017/DSA-3789-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-3789");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'libevent' package(s) announced via the DSA-3789-1 advisory.");

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

  script_tag(name:"insight", value:"Several vulnerabilities were discovered in libevent, an asynchronous event notification library. They would lead to Denial Of Service via application crash, or remote code execution.

For the stable distribution (jessie), these problems have been fixed in version 2.0.21-stable-2+deb8u1.

For the unstable distribution (sid), these problems have been fixed in version 2.0.21-stable-3.

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

  script_tag(name:"affected", value:"'libevent' 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:"libevent-2.0-5", ver:"2.0.21-stable-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libevent-core-2.0-5", ver:"2.0.21-stable-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libevent-dbg", ver:"2.0.21-stable-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libevent-dev", ver:"2.0.21-stable-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libevent-extra-2.0-5", ver:"2.0.21-stable-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libevent-openssl-2.0-5", ver:"2.0.21-stable-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libevent-pthreads-2.0-5", ver:"2.0.21-stable-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

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

exit(0);