Description
scponly 4.6 and earlier allows remote authenticated users to bypass intended restrictions and execute code by invoking dangerous subcommands including (1) unison, (2) rsync, (3) svn, and (4) svnserve, as originally demonstrated by creating a Subversion (SVN) repository with malicious hooks, then using svn to trigger execution of those hooks.
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 4.0 | scponly | 4.6-1etch1 | DSA-1473-1 |
| Debian 3.1 | scponly | 4.0-1sarge2 | DSA-1473-1 |
Advisories 1
- DSA-1473-1 scponly - arbitrary code execution Debian Security (DSA / DLA) · Mar 9, 2026
References
- 26900 vdb-entry
- DSA-1473 vendor-advisory
- http://bugs.gentoo.org/show_bug.cgi?id=201726
- http://scponly.cvs.sourceforge.net/scponly/scponly/SECURITY?view=markup
- ADV-2007-4243 vdb-entry
- GLSA-200802-06 vendor-advisory
- 28123 third-party-advisory
- 44137 vdb-entry
- 1019103 vdb-entry
- 28944 third-party-advisory
- FEDORA-2008-1728 vendor-advisory
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=437148
- 28538 third-party-advisory
- FEDORA-2008-1743 vendor-advisory
- 28981 third-party-advisory