Description
arc 5.21j and earlier create temporary files with world-readable permissions, which allows local users to read sensitive information from files created by (1) arc (arc.c) or (2) marc (marc.c).
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 | arc | 5.21m-1 | — |
| Debian 13 | arc | 5.21m-1 | — |
| Debian 12 | arc | 5.21m-1 | — |
| Debian 3.1 | arc | 5.21l-1sarge1 | DSA-843-1 |
Advisories 1
- DSA-843-1 arc - insecure temporary file Debian Security (DSA / DLA) · Mar 9, 2026
References
- 16805 third-party-advisory
- 20050916 arc insecure temporary file creation mailing-list
- http://www.zataz.net/adviso/arc-09052005.txt
- DSA-843 vendor-advisory
- 17068 third-party-advisory