Description
Balabit syslog-ng 2.0.x before 2.0.6 and 2.1.x before 2.1.8 allows remote attackers to cause a denial of service (crash) via a message with a timestamp that does not contain a trailing space, which triggers a NULL pointer dereference.
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 | syslog-ng | 2.0.6-1 | — |
| Debian 13 | syslog-ng | 2.0.6-1 | — |
| Debian 12 | syslog-ng | 2.0.6-1 | — |
| Debian 5.0 | syslog-ng | 2.0.5-3+lenny1 | DTSA-105-1 |
| Debian 4.0 | syslog-ng | 2.0.0-1etch1 | DSA-1464-1 |
Advisories 2
- DSA-1464-1 syslog-ng - denial of service Debian Security (DSA / DLA) · Mar 9, 2026
- DTSA-105-1 syslog-ng - remote denial of service Debian Security (DSA / DLA) · Mar 9, 2026
References
- 26897 vdb-entry
- FEDORA-2008-0523 vendor-advisory
- 20071217 ZSA-2007-029: syslog-ng Denial of Service mailing-list
- DSA-1464 vendor-advisory
- ADV-2007-4257 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=426173
- 28279 third-party-advisory
- 28118 third-party-advisory
- 28483 third-party-advisory
- 1019105 vdb-entry
- 28372 third-party-advisory
- 39551 vdb-entry
- GLSA-200712-19 vendor-advisory
- FEDORA-2008-0559 vendor-advisory
- 20071217 Re: [syslog-ng] ZSA-2007-029: syslog-ng Denial of Service mailing-list
- syslogng-timestamp-dos(39082) vdb-entry