6.5 Medium
AI Score
Confidence
Low
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.97 High
EPSS
Percentile
99.7%
The remote host is missing an update to the system
as announced in the referenced advisory.
# SPDX-FileCopyrightText: 2011 E-Soft Inc.
# 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("1.3.6.1.4.1.25623.1.0.69601");
script_version("2023-07-26T05:05:09+0000");
script_tag(name:"last_modification", value:"2023-07-26 05:05:09 +0000 (Wed, 26 Jul 2023)");
script_tag(name:"creation_date", value:"2011-05-12 19:21:50 +0200 (Thu, 12 May 2011)");
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_cve_id("CVE-2011-0997");
script_name("FreeBSD Ports: isc-dhcp31-client");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2011 E-Soft Inc.");
script_family("FreeBSD Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/freebsd", "ssh/login/freebsdrel");
script_tag(name:"insight", value:"The following packages are affected:
isc-dhcp31-client
isc-dhcp41-client
CVE-2011-0997
dhclient in ISC DHCP 3.0.x through 4.2.x before 4.2.1-P1, 3.1-ESV
before 3.1-ESV-R1, and 4.1-ESV before 4.1-ESV-R2 allows remote
attackers to execute arbitrary commands via shell metacharacters in a
hostname obtained from a DHCP message, as demonstrated by a hostname
that is provided to dhclient-script.");
script_tag(name:"solution", value:"Update your system with the appropriate patches or
software upgrades.");
script_tag(name:"summary", value:"The remote host is missing an update to the system
as announced in the referenced advisory.");
script_tag(name:"qod_type", value:"package");
script_tag(name:"solution_type", value:"VendorFix");
exit(0);
}
include("revisions-lib.inc");
include("pkg-lib-bsd.inc");
vuln = FALSE;
txt = "";
bver = portver(pkg:"isc-dhcp31-client");
if(!isnull(bver) && revcomp(a:bver, b:"3.1.ESV_1,1")<0) {
txt += 'Package isc-dhcp31-client version ' + bver + ' is installed which is known to be vulnerable.\n';
vuln = TRUE;
}
bver = portver(pkg:"isc-dhcp41-client");
if(!isnull(bver) && revcomp(a:bver, b:"4.1.e,2")<0) {
txt += 'Package isc-dhcp41-client version ' + bver + ' is installed which is known to be vulnerable.\n';
vuln = TRUE;
}
if(vuln) {
security_message(data:txt);
} else if (__pkg_match) {
exit(99);
}