Two security vulnerabilities affecting ISC dhcpd, a server for automatic IP address assignment, in Debian have been discovered.
CVE-2012-3571 Markus Hietava of the Codenomicon CROSS project discovered that it is possible to force the server to enter an infinite loop via messages with malformed client identifiers.
CVE-2012-3954 Glen Eustace discovered that DHCP servers running in DHCPv6 mode and possibly DHCPv4 mode suffer of memory leaks while processing messages. An attacker can use this flaw to exhaust resources and perform denial of service attacks.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-2516. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(60142);
script_version("1.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");
script_cve_id("CVE-2012-3571", "CVE-2012-3954");
script_bugtraq_id(54665);
script_xref(name:"DSA", value:"2516");
script_name(english:"Debian DSA-2516-1 : isc-dhcp - several vulnerabilities");
script_summary(english:"Checks dpkg output for the updated package");
script_set_attribute(
attribute:"synopsis",
value:"The remote Debian host is missing a security-related update."
);
script_set_attribute(
attribute:"description",
value:
"Two security vulnerabilities affecting ISC dhcpd, a server for
automatic IP address assignment, in Debian have been discovered.
- CVE-2012-3571
Markus Hietava of the Codenomicon CROSS project
discovered that it is possible to force the server to
enter an infinite loop via messages with malformed
client identifiers.
- CVE-2012-3954
Glen Eustace discovered that DHCP servers running in
DHCPv6 mode and possibly DHCPv4 mode suffer of memory
leaks while processing messages. An attacker can use
this flaw to exhaust resources and perform denial of
service attacks."
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2012-3571"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2012-3954"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/squeeze/isc-dhcp"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2012/dsa-2516"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the isc-dhcp packages.
For the stable distribution (squeeze), this problem has been fixed in
version 4.1.1-P1-15+squeeze4."
);
script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:isc-dhcp");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");
script_set_attribute(attribute:"patch_publication_date", value:"2012/07/26");
script_set_attribute(attribute:"plugin_publication_date", value:"2012/07/30");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2012-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Debian Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include("audit.inc");
include("debian_package.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (deb_check(release:"6.0", prefix:"dhcp3-client", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"dhcp3-common", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"dhcp3-dev", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"dhcp3-relay", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"dhcp3-server", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"isc-dhcp-client", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"isc-dhcp-client-dbg", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"isc-dhcp-client-udeb", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"isc-dhcp-common", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"isc-dhcp-dev", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"isc-dhcp-relay", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"isc-dhcp-relay-dbg", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"isc-dhcp-server", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"isc-dhcp-server-dbg", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (deb_check(release:"6.0", prefix:"isc-dhcp-server-ldap", reference:"4.1.1-P1-15+squeeze4")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
else security_warning(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | isc-dhcp | p-cpe:/a:debian:debian_linux:isc-dhcp |
debian | debian_linux | 6.0 | cpe:/o:debian:debian_linux:6.0 |