It was discovered that there can be a denial of service (DoS)
vulnerability in squid3 due to a memory leak in SNMP query rejection
code when SNMP is enabled. In environments where per-process memory
restrictions are not enforced strictly, a remote attacker to consume
all memory available to the Squid process, causing it to crash.
# Copyright (C) 2018 Greenbone Networks GmbH
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (C) of 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("1.3.6.1.4.1.25623.1.0.891596");
script_version("2020-01-29T08:22:52+0000");
script_cve_id("CVE-2018-19132");
script_name("Debian LTS: Security Advisory for squid3 (DLA-1596-1)");
script_tag(name:"last_modification", value:"2020-01-29 08:22:52 +0000 (Wed, 29 Jan 2020)");
script_tag(name:"creation_date", value:"2018-11-26 00:00:00 +0100 (Mon, 26 Nov 2018)");
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:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"package");
script_xref(name:"URL", value:"https://lists.debian.org/debian-lts-announce/2018/11/msg00032.html");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2018 Greenbone Networks GmbH http://greenbone.net");
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_tag(name:"affected", value:"squid3 on Debian Linux");
script_tag(name:"solution", value:"For Debian 8 'Jessie', this problem has been fixed in version
3.4.8-6+deb8u6.
We recommend that you upgrade your squid3 packages.");
script_tag(name:"summary", value:"It was discovered that there can be a denial of service (DoS)
vulnerability in squid3 due to a memory leak in SNMP query rejection
code when SNMP is enabled. In environments where per-process memory
restrictions are not enforced strictly, a remote attacker to consume
all memory available to the Squid process, causing it to crash.");
script_tag(name:"vuldetect", value:"This check tests the installed software version using the apt package manager.");
exit(0);
}
include("revisions-lib.inc");
include("pkg-lib-deb.inc");
res = "";
report = "";
if(!isnull(res = isdpkgvuln(pkg:"squid-cgi", ver:"3.4.8-6+deb8u6", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"squid-purge", ver:"3.4.8-6+deb8u6", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"squid3", ver:"3.4.8-6+deb8u6", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"squid3-common", ver:"3.4.8-6+deb8u6", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"squid3-dbg", ver:"3.4.8-6+deb8u6", rls:"DEB8"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"squidclient", ver:"3.4.8-6+deb8u6", rls:"DEB8"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}