Description
rssh 2.3.2, as used by Debian, Fedora, and others, when the rsync protocol is enabled, allows local users to bypass intended restricted shell access via a (1) "-e" or (2) "--" command line option.
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 6.0 | rssh | 2.3.2-13squeeze3 | DSA-2578-1 |
Advisories 1
- DSA-2578-1 rssh - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- 51307 third-party-advisory
- [oss-security] 20121128 rssh: incorrect filtering of command line options mailing-list
- DSA-2578 vendor-advisory
- 56708 vdb-entry
- rssh-eoption-command-execution(80334) vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=877279
- 20121127 Re: rssh security announcement mailing-list