CVE-2011-4539
medium
CVSS v3
—
CVSS v4 NEW
—
VIR risk
5.0
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Ubuntu Affected 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 11.10 | Affected | — |
| 11.04 | Affected | — |
Debian Mixed 6 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 4.2.2.dfsg.1-5 |
| sid | Fixed | 4.2.2.dfsg.1-5 |
| bullseye | Fixed | 4.2.2.dfsg.1-5 |
| bookworm | Fixed | 4.2.2.dfsg.1-5 |
| 7.0 | Affected | — |
| 6.0 | Affected | — |
References
- http://lists.fedoraproject.org/pipermail/package-announce/2011-December/070980.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071549.html
- http://lists.opensuse.org/opensuse-updates/2011-12/msg00006.html
- http://secunia.com/advisories/47153
- http://secunia.com/advisories/47178
- http://security.gentoo.org/glsa/glsa-201301-06.xml
- http://www.debian.org/security/2012/dsa-2519
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:182
- http://www.securityfocus.com/bid/50971
- http://www.securitytracker.com/id?1026393
- http://www.ubuntu.com/usn/USN-1309-1
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71680
- https://www.isc.org/software/dhcp/advisories/cve-2011-4539
- https://security-tracker.debian.org/tracker/CVE-2011-4539
CWEs
CWE-20
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.