CVE-2011-1951 describes a denial-of-service vulnerability in Balabit syslog-ng versions prior to 3.2.4, specifically within the lib/logmatcher.c component when the global flag is set and PCRE 8.12 (and potentially other versions) is used. This flaw allows remote attackers to trigger excessive memory consumption by sending messages that do not match a configured regular expression. The vulnerability has a CVSS score of 4.3, indicating a medium attack complexity with no confidentiality or integrity impact, but 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 |
|---|---|---|---|
< 3.2.4CPE matchmatch criteria | cpe:2.3:a:oneidentity:syslog-ng:*:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:M/Au:N/C:N/I:N/A:P
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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.