ArchLinux: 201708-14: subversion: arbitrary command execution
Summary
A security issue has been found in subversion < 1.9.7. A Subversion client sometimes connects to URLs provided by the repository. This happens in two primary cases: during 'checkout', 'export', 'update', and 'switch', when the tree being downloaded contains svn:externals properties; and when using 'svnsync sync' with one URL argument. A maliciously constructed svn+ssh:// URL would cause Subversion clients to run an arbitrary shell command. Such a URL could be generated by a malicious server, by a malicious user committing to a honest server (to attack another user of that server's repositories), or by a proxy server. The vulnerability affects all clients, including those that use file://, http://, and plain (untunneled) svn://.
Resolution
Upgrade to 1.9.7-1.
# pacman -Syu "subversion>=1.9.7-1"
The problem has been fixed upstream in version 1.9.7.
References
https://subversion.apache.org/security/CVE-2017-9800-advisory.txt https://lists.apache.org/thread/%3C2fefe468-7d41-11e7-aea1-9312c6089150@apache.org%3E https://security.archlinux.org/CVE-2017-9800
Workaround
None.