CVE-2012-3955

Severity: high (CVSS 7.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 21.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-09-14 · updated 2026-06-16

Description

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.

Affected products

Canonical Ubuntu Linux: 10.04, 11.04, 11.10, 12.04
Debian Linux: 6.0, 7.0
ISC DHCP: 4.1-esv, 4.1-esv-r1, 4.1-esv-r2, 4.1-esv-r3, 4.1-esv-r3_b1, 4.1-esv-r4 (+19)

References

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

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