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openvasCopyright (C) 2019 Greenbone Networks GmbHOPENVAS:1361412562310892020
HistoryDec 05, 2019 - 12:00 a.m.

Debian LTS: Security Advisory for libonig (DLA-2020-1)

2019-12-0500:00:00
Copyright (C) 2019 Greenbone Networks GmbH
plugins.openvas.org
22

The remote host is missing an update for the

# 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("1.3.6.1.4.1.25623.1.0.892020");
  script_version("2020-01-29T08:22:52+0000");
  script_cve_id("CVE-2019-19012", "CVE-2019-19204", "CVE-2019-19246");
  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:"last_modification", value:"2020-01-29 08:22:52 +0000 (Wed, 29 Jan 2020)");
  script_tag(name:"creation_date", value:"2019-12-05 03:00:09 +0000 (Thu, 05 Dec 2019)");
  script_name("Debian LTS: Security Advisory for libonig (DLA-2020-1)");
  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=DEB8");

  script_xref(name:"URL", value:"https://lists.debian.org/debian-lts-announce/2019/12/msg00002.html");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DLA-2020-1");
  script_xref(name:"URL", value:"https://bugs.debian.org/944959");
  script_xref(name:"URL", value:"https://bugs.debian.org/945313");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'libonig'
  package(s) announced via the DLA-2020-1 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 the Oniguruma regular
expressions library, notably used in PHP mbstring.

CVE-2019-19012

An integer overflow in the search_in_range function in regexec.c
leads to an out-of-bounds read, in which the offset of this read
is under the control of an attacker. (This only affects the 32-bit
compiled version). Remote attackers can cause a denial-of-service
or information disclosure, or possibly have unspecified other
impact, via a crafted regular expression.

CVE-2019-19204

In the function fetch_range_quantifier in regparse.c, PFETCH is
called without checking PEND. This leads to a heap-based buffer
over-read and lead to denial-of-service via a crafted regular
expression.

CVE-2019-19246

Heap-based buffer over-read in str_lower_case_match in regexec.c
can lead to denial-of-service via a crafted regular expression.");

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

  script_tag(name:"solution", value:"For Debian 8 'Jessie', these problems have been fixed in version
5.9.5-3.2+deb8u4.

We recommend that you upgrade your libonig 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:"libonig-dev", ver:"5.9.5-3.2+deb8u4", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libonig2", ver:"5.9.5-3.2+deb8u4", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libonig2-dbg", ver:"5.9.5-3.2+deb8u4", rls:"DEB8"))) {
  report += res;
}

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

exit(0);