Description
Integer overflow in rsyslog before 7.6.7 and 8.x before 8.4.2 and sysklogd 1.5 and earlier allows remote attackers to cause a denial of service (crash) via a large priority (PRI) value. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-3634.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | rsyslog | 8.4.2-1 | — |
| Debian 13 | rsyslog | 8.4.2-1 | — |
| Debian 12 | rsyslog | 8.4.2-1 | — |
| Debian 7 | rsyslog | 5.8.11-3+deb7u2 | DSA-3047-1 |
| Debian 6.0 | rsyslog | 4.6.4-2+deb6u1 | DLA-72-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | rsyslog | 7.4.4-1ubuntu2.3 | USN-2381-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | rsyslog | 8.23.0-2.1 | openSUSE-SU-2024:10498-1 |
Advisories 5
- DLA-72-1 rsyslog - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3047-1 rsyslog - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2381-1 rsyslog vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2024:10498-1 rsyslog-8.23.0-2.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- WID-SEC-2022-0140 rsyslog: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Aug 17, 2023
References
- openSUSE-SU-2014:1297 vendor-advisory
- SUSE-SU-2014:1294 vendor-advisory
- openSUSE-SU-2014:1298 vendor-advisory
- [oss-security] 20140930 vulnerability in rsyslog mailing-list
- 61494 third-party-advisory
- [oss-security] 20141003 sysklogd vulnerability (CVE-2014-3634) mailing-list
- http://www.rsyslog.com/remote-syslog-pri-vulnerability-cve-2014-3683/
- USN-2381-1 vendor-advisory
- DSA-3047 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html