Rsyslog: rsyslog: denial of service via heap buffer overflow in rainerscript replace() function
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
A flaw was found in rsyslog. An unauthenticated remote attacker can trigger a heap buffer overflow in the RainerScript `replace()` function by sending specially crafted syslog messages. This vulnerability arises from an incorrect buffer size calculation during string replacement, causing memory corruption. Successful exploitation can lead to a denial of service (DoS) for the affected system.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- rsyslog
Version range not reported
- rsyslog
Version range not reported
- rsyslog
Version range not reported
- rsyslog
Version range not reported
- rsyslog
Version range not reported
- rsyslog
Version range not reported
- rsyslog
Version range not reported
- rsyslog
Version range not reported
- rsyslog
Version range not reported
- rhui5/haproxy-rhel9
Version range not reported
- rsyslog
Version range not reported
- rsyslog7
Version range not reported
- rsyslog
Version range not reported