4.3

CVE-2011-1951: oneidentity syslog-ng Resource Management Errors

CVSS: 4.3v2.0MediumModified
AliasesDEBIAN-CVE-2011-1951
Published 11-07-2011Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2011-1951 is a medium (CVSS 4.3) Resource Management Errors vulnerability in oneidentity syslog-ng. EPSS estimates a 2.46% chance of exploitation in the next 30 days, higher than 84.2% of scored vulnerabilities.

Overall risk
18/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v2.0 (NVD)
EPSS score
2.46%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-07-2011
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

lib/logmatcher.c in Balabit syslog-ng before 3.2.4, when the global flag is set and when using PCRE 8.12 and possibly other versions, allows remote attackers to cause a denial of service (memory consumption) via a message that does not match a regular expression.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.46%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

0.00 pp

From 2.46% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.46%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • syslog-ng< 3.2.4-1
Oneidentity1 product

2 vendors · 2 products

References

7 links