Subversion: Metadata information leak

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200409-35 / Subversion
Release Date	September 29, 2004
Latest Revision	September 29, 2004: 01
Impact	low
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
dev-util/subversion	< 1.0.8	>= 1.0.8	All supported architectures

Related bugreports: #65085

Synopsis

An information leak in mod_authz_svn could allow sensitive metadata of protected areas to be leaked to unauthorized users.

2. Impact Information

Background

Subversion is a versioning system designed to be a replacement for CVS. mod_authz_svn is an Apache module to do path-based authentication for Subversion repositories.

Description

There is a bug in mod_authz_svn that causes it to reveal logged metadata regarding commits to protected areas.

Impact

Protected files themselves will not be revealed, but an attacker could use the metadata to reveal the existence of protected areas, such as paths, file versions, and the commit logs from those areas.

3. Resolution Information

Workaround

Rather than using mod_authz_svn, move protected areas into seperate repositories and use native Apache authentication to make these repositories unreadable.

Resolution

All Subversion users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge sync
# emerge -pv ">=dev-util/subversion-1.0.8"
# emerge ">=dev-util/subversion-1.0.8"

4. References

Updated September 29, 2004

Summary: This is a Gentoo Linux Security Advisory

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