| Name | CVE-2011-4539 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-2519-1, DSA-2519-2 |
| Debian Bugs | 652259 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| isc-dhcp (PTS) | jessie, jessie (lts) | 4.3.1-6+deb8u6 | fixed |
| stretch (security) | 4.3.5-3+deb9u2 | fixed |
| stretch (lts), stretch | 4.3.5-3+deb9u3 | fixed |
| buster (security), buster, buster (lts) | 4.4.1-2+deb10u3 | fixed |
| bullseye | 4.4.1-2.3+deb11u2 | fixed |
| bullseye (security) | 4.4.1-2.3+deb11u1 | fixed |
| bookworm | 4.4.3-P1-2 | fixed |
| sid, trixie | 4.4.3-P1-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| dhcp3 | source | (unstable) | (not affected) | | | |
| isc-dhcp | source | squeeze | 4.1.1-P1-15+squeeze6 | | DSA-2519-2 | |
| isc-dhcp | source | (unstable) | 4.2.2.dfsg.1-5 | low | | 652259 |
Notes
- dhcp3 <not-affected> (Only affects DHCP 4.x)