[arch-security] [ASA-201708-14] subversion: arbitrary command execution

Remi Gacogne rgacogne at archlinux.org
Tue Aug 15 12:36:30 UTC 2017

Arch Linux Security Advisory ASA-201708-14

Severity: Critical
Date    : 2017-08-15
CVE-ID  : CVE-2017-9800
Package : subversion
Type    : arbitrary command execution
Remote  : Yes
Link    : https://security.archlinux.org/AVG-379


The package subversion before version 1.9.7-1 is vulnerable to
arbitrary command execution.


Upgrade to 1.9.7-1.

# pacman -Syu "subversion>=1.9.7-1"

The problem has been fixed upstream in version 1.9.7.




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
The vulnerability affects all clients, including those that use
file://, http://, and plain (untunneled) svn://.


A remote attacker can execute arbitrary command on the affected host by
tricking a user into executing a subversion command.



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