A memory leak in rsyslog before 5.7.6 was found in the way deamon processed log messages…
Priority LOW 25CWE-772Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-772.
Summary
A memory leak in rsyslog before 5.7.6 was found in the way deamon processed log messages are logged when multiple rulesets were used and some output batches contained messages belonging to more than one ruleset. A local attacker could cause denial of the rsyslogd daemon service via a log message belonging to more than one ruleset
Why it matters now
EPSS 0.00378 32nd percentileScored 2026-11-07
Fix Fixed rsyslog (rsyslog): 5.7.6
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| rsyslog | rsyslog | before 5.7.6 | 5.7.6 | Patch available | CNA |
- rsyslog Vendorrsyslog Affected before 5.7.6 Fixed in 5.7.6 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:rsyslog:rsyslog:*:*:*:*:*:*:*:* | before 5.7.6 | Vulnerable | rsyslog |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:* | 11.4 | Vulnerable | openSUSE |
- cpe:2.3:a:rsyslog:rsyslog:*:*:*:*:*:*:*:* Versions before 5.7.6 Vulnerable ·rsyslog
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:* Versions 11.4 Vulnerable ·openSUSE
Remediation
- Fix · CNA rsyslog (rsyslog) Fixed in 5.7.6
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 2 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2011-1490
- 2026-10-03 Alias added: GHSA-ph9m-fj6v-j5p3
References
More Rsyslog vulnerabilities
- TI-2019-12711 An issue was discovered in Rsyslog v8.1908.0. CVSS 3.1CRITICAL 9.8
- TI-2019-12712 An issue was discovered in Rsyslog v8.1908.0. CVSS 3.1CRITICAL 9.8
- TI-2019-12710 contrib/pmdb2diag/pmdb2diag.c in Rsyslog v8.1908.0 allows out-of-bounds access because the level length is mishandled. CVSS 3.1CRITICAL 9.8
- TI-2017-09315 The zmq3 input and output modules in rsyslog before 8.28.0 interpreted description fields… CVSS 3.0CRITICAL 9.8
- TI-2022-08713 Buffer overflow in TCP syslog server (receiver) components in rsyslog CVSS 3.1HIGH 8.1
- TI-2014-02955 rsyslog before 7.6.6 and 8.x before 8.4.1 and sysklogd 1.5 and earlier allows remote… CVSS 2.0HIGH 7.5
Sources
- CVE-2011-1490 · CVE Program
- CVE-2011-1490 · NVD
- FIRST EPSS
- GHSA-ph9m-fj6v-j5p3 · GitHub Advisory Database · CC BY 4.0
- CVE-2011-1490 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences