Input validation error in DHCP - CVE-2012-3955
Published: September 14, 2012 / Updated: August 4, 2020
Vulnerability identifier: #VU33931
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2012-3955
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: ISC
Affected software:
DHCP
DHCP
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
ISC DHCP 4.1.x before 4.1-ESV-R7 and 4.2.x before 4.2.4-P2 allows remote attackers to cause a denial of service (daemon crash) in opportunistic circumstances by establishing an IPv6 lease in an environment where the lease expiration time is later reduced.
How to mitigate CVE-2012-3955
Install update from vendor's website.
Sources
- http://lists.fedoraproject.org/pipermail/package-announce/2012-October/088882.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-September/086992.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088220.html
- http://lists.opensuse.org/opensuse-updates/2012-09/msg00088.html
- http://lists.opensuse.org/opensuse-updates/2012-09/msg00103.html
- http://lists.opensuse.org/opensuse-updates/2012-09/msg00105.html
- http://rhn.redhat.com/errata/RHSA-2013-0504.html
- http://secunia.com/advisories/51318
- http://security.gentoo.org/glsa/glsa-201301-06.xml
- http://www.debian.org/security/2012/dsa-2551
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:153
- http://www.securityfocus.com/bid/55530
- http://www.securitytracker.com/id?1027528
- http://www.ubuntu.com/usn/USN-1571-1
- https://blogs.oracle.com/sunsecurity/entry/cve_2012_3955_denial_of
- https://kb.isc.org/article/AA-00779