Description
util.c in rssh 2.3.0 in Debian GNU/Linux does not use braces to make a block, which causes a check for CVS to always succeed and allows rsync and rdist to bypass intended access restrictions in rssh.conf.
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 3.1 | rssh | 2.2.3-1.sarge.2 | DSA-1109 |
Advisories 1
- DSA-1109 rssh - programming error Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-1109 vendor-advisory
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=346322
- 18999 vdb-entry
- 21087 third-party-advisory
- debian-rssh-rsync-rdist-bypass-security(25424) vdb-entry