Description
psbanner in the LPRng package allows local users to overwrite arbitrary files via a symbolic link attack on the /tmp/before file.
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 | lprng | 3.8.20-4. | — |
| Debian 13 | lprng | 3.8.20-4. | — |
| Debian 12 | lprng | 3.8.20-4. | — |
| Debian 3.0 | lprng | 3.8.10-1.2 | DSA-285 |
Advisories 1
- DSA-285 lprng - insecure temporary file Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?archive=no&bug=188366
- RHSA-2003:142 vendor-advisory
- DSA-285 vendor-advisory
- oval:org.mitre.oval:def:423 vdb-entry signature