CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:A/AC:L/Au:N/C:N/I:N/A:C
AI Score
Confidence
Low
EPSS
Percentile
94.2%
The remote host is missing an update for the
# SPDX-FileCopyrightText: 2012 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_xref(name:"URL", value:"http://lists.centos.org/pipermail/centos-announce/2012-August/018785.html");
script_oid("1.3.6.1.4.1.25623.1.0.881463");
script_version("2023-07-10T08:07:43+0000");
script_tag(name:"last_modification", value:"2023-07-10 08:07:43 +0000 (Mon, 10 Jul 2023)");
script_tag(name:"creation_date", value:"2012-08-03 11:17:06 +0530 (Fri, 03 Aug 2012)");
script_cve_id("CVE-2012-3571", "CVE-2012-3954");
script_tag(name:"cvss_base", value:"6.1");
script_tag(name:"cvss_base_vector", value:"AV:A/AC:L/Au:N/C:N/I:N/A:C");
script_xref(name:"CESA", value:"2012:1141");
script_name("CentOS Update for dhclient CESA-2012:1141 centos6");
script_tag(name:"summary", value:"The remote host is missing an update for the 'dhclient'
package(s) announced via the referenced advisory.");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2012 Greenbone AG");
script_family("CentOS Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/centos", "ssh/login/rpms", re:"ssh/login/release=CentOS6");
script_tag(name:"affected", value:"dhclient on CentOS 6");
script_tag(name:"solution", value:"Please install the updated packages.");
script_tag(name:"insight", value:"The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows
individual devices on an IP network to get their own network configuration
information, including an IP address, a subnet mask, and a broadcast
address.
A denial of service flaw was found in the way the dhcpd daemon handled
zero-length client identifiers. A remote attacker could use this flaw to
send a specially-crafted request to dhcpd, possibly causing it to enter an
infinite loop and consume an excessive amount of CPU time. (CVE-2012-3571)
Two memory leak flaws were found in the dhcpd daemon. A remote attacker
could use these flaws to cause dhcpd to exhaust all available memory by
sending a large number of DHCP requests. (CVE-2012-3954)
Upstream acknowledges Markus Hietava of the Codenomicon CROSS project as
the original reporter of CVE-2012-3571, and Glen Eustace of Massey
University, New Zealand, as the original reporter of CVE-2012-3954.
Users of DHCP should upgrade to these updated packages, which contain
backported patches to correct these issues. After installing this update,
all DHCP servers will be restarted automatically.");
script_tag(name:"qod_type", value:"package");
script_tag(name:"solution_type", value:"VendorFix");
exit(0);
}
include("revisions-lib.inc");
include("pkg-lib-rpm.inc");
release = rpm_get_ssh_release();
if(!release)
exit(0);
res = "";
if(release == "CentOS6")
{
if ((res = isrpmvuln(pkg:"dhclient", rpm:"dhclient~4.1.1~31.P1.el6_3.1", rls:"CentOS6")) != NULL)
{
security_message(data:res);
exit(0);
}
if ((res = isrpmvuln(pkg:"dhcp", rpm:"dhcp~4.1.1~31.P1.el6_3.1", rls:"CentOS6")) != NULL)
{
security_message(data:res);
exit(0);
}
if ((res = isrpmvuln(pkg:"dhcp-common", rpm:"dhcp-common~4.1.1~31.P1.el6_3.1", rls:"CentOS6")) != NULL)
{
security_message(data:res);
exit(0);
}
if ((res = isrpmvuln(pkg:"dhcp-devel", rpm:"dhcp-devel~4.1.1~31.P1.el6_3.1", rls:"CentOS6")) != NULL)
{
security_message(data:res);
exit(0);
}
if (__pkg_match) exit(99);
exit(0);
}