Description
Format string vulnerability in the msg function for rlpr daemon (rlprd) 2.0.4 allows remote attackers to execute arbitrary code via format string specifiers in a buffer that can not be resolved, which is provided to the syslog function.
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 | rlpr | 2.02-7.1 | — |
| Debian 13 | rlpr | 2.02-7.1 | — |
| Debian 12 | rlpr | 2.02-7.1 | — |
| Debian 3.0 | rlpr | 2.02-7woody1 | DSA-524 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 2
- Rlpr 2.04 - 'msg()' Remote Format String EDB-307 · remote · Jun 25, 2004 · verified
- Rlpr 2.0 - 'msg()' Multiple Vulnerabilities EDB-24223 · remote · Jun 19, 2004 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- DSA-524 rlpr - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- 20040624 Rlpr Advisory mailing-list
- 10578 vdb-entry
- DSA-524 vendor-advisory
- rlpr-msg-format-string(16453) vdb-entry