Debian Security Advisory DSA 4586-1 (ruby2.5 - security update)

# Copyright (C) 2019 Greenbone Networks GmbH
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (C) the respective author(s)
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.704586");
  script_version("2019-12-18T03:00:58+0000");
  script_cve_id("CVE-2019-15845", "CVE-2019-16201", "CVE-2019-16254", "CVE-2019-16255");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_tag(name:"last_modification", value:"2019-12-18 03:00:58 +0000 (Wed, 18 Dec 2019)");
  script_tag(name:"creation_date", value:"2019-12-18 03:00:58 +0000 (Wed, 18 Dec 2019)");
  script_name("Debian Security Advisory DSA 4586-1 (ruby2.5 - security update)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 Greenbone Networks GmbH");
  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=DEB10");

  script_xref(name:"URL", value:"https://www.debian.org/security/2019/dsa-4586.html");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4586-1");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'ruby2.5'
  package(s) announced via the DSA-4586-1 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 have been discovered in the interpreter for the
Ruby language, which could result in unauthorized access by bypassing
intended path matchings, denial of service, or the execution of
arbitrary code.");

  script_tag(name:"affected", value:"'ruby2.5' package(s) on Debian Linux.");

  script_tag(name:"solution", value:"For the stable distribution (buster), these problems have been fixed in
version 2.5.5-3+deb10u1.

We recommend that you upgrade your ruby2.5 packages.");

  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");

res = "";
report = "";
if(!isnull(res = isdpkgvuln(pkg:"libruby2.5", ver:"2.5.5-3+deb10u1", rls:"DEB10"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ruby2.5", ver:"2.5.5-3+deb10u1", rls:"DEB10"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ruby2.5-dev", ver:"2.5.5-3+deb10u1", rls:"DEB10"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ruby2.5-doc", ver:"2.5.5-3+deb10u1", rls:"DEB10"))) {
  report += res;
}

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

exit(0);