CVE-2011-4539 describes a denial-of-service vulnerability in ISC DHCP versions 4.x before 4.2.3-P1 and 4.1-ESV before 4.1-ESV-R4, affecting various Canonical, Debian, and ISC DHCP deployments. This flaw allows an unauthenticated remote attacker to crash the dhcpd daemon by sending a specially crafted request packet that exploits improper handling of regular expressions in the dhcpd.conf file. With a CVSS score of 5.0 (AV:N/AC:L/Au:N/C:N/I:N/A:P), it indicates a low complexity attack with no authentication required, leading to a partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
4.0CPE matchmatch criteria | cpe:2.3:a:isc:dhcp:4.0:*:*:*:*:*:*:* | ||
4.0.0CPE matchmatch criteria | cpe:2.3:a:isc:dhcp:4.0.0:*:*:*:*:*:*:* | ||
4.0.1CPE matchmatch criteria | cpe:2.3:a:isc:dhcp:4.0.1:-:*:*:*:*:*:* | ||
4.0.1CPE matchmatch criteria | cpe:2.3:a:isc:dhcp:4.0.1:b1:*:*:*:*:*:* | ||
4.0.1CPE matchmatch criteria | cpe:2.3:a:isc:dhcp:4.0.1:rc1:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.