Vulnerability Description
dhcpd in ISC DHCP 4.x before 4.2.3-P1 and 4.1-ESV before 4.1-ESV-R4 does not properly handle regular expressions in dhcpd.conf, which allows remote attackers to cause a denial of service (daemon crash) via a crafted request packet.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Isc | Dhcp | 4.0 |
| Canonical | Ubuntu Linux | 11.04 |
| Debian | Debian Linux | 6.0 |
Related Weaknesses (CWE)
References
- http://lists.fedoraproject.org/pipermail/package-announce/2011-December/070980.hMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071549.htMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2011-12/msg00006.htmlMailing ListThird Party Advisory
- http://secunia.com/advisories/47153Third Party Advisory
- http://secunia.com/advisories/47178Third Party Advisory
- http://security.gentoo.org/glsa/glsa-201301-06.xmlThird Party Advisory
- http://www.debian.org/security/2012/dsa-2519Third Party Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:182Third Party Advisory
- http://www.securityfocus.com/bid/50971Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id?1026393Third Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-1309-1Third Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71680Third Party AdvisoryVDB Entry
- https://www.isc.org/software/dhcp/advisories/cve-2011-4539Vendor Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-December/070980.hMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071549.htMailing ListThird Party Advisory
FAQ
What is CVE-2011-4539?
CVE-2011-4539 is a vulnerability with a CVSS score of 5.0 (MEDIUM). dhcpd in ISC DHCP 4.x before 4.2.3-P1 and 4.1-ESV before 4.1-ESV-R4 does not properly handle regular expressions in dhcpd.conf, which allows remote attackers to cause a denial of service (daemon crash...
How severe is CVE-2011-4539?
CVE-2011-4539 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-4539?
Check the references section above for vendor advisories and patch information. Affected products include: Isc Dhcp, Canonical Ubuntu Linux, Debian Debian Linux.