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[ GLSA 200407-20 ] Subversion: Vulnerability in mod_authz_svn
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GLSA
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Joined: 13 Jun 2003
Posts: 4078
Location: Barcelona, Spain

PostPosted: Mon Jul 26, 2004 9:59 pm    Post subject: [ GLSA 200407-20 ] Subversion: Vulnerability in mod_authz_sv Reply with quote

Gentoo Linux Security Advisory

Title: Subversion: Vulnerability in mod_authz_svn (GLSA 200407-20)
Severity: low
Exploitable: remote
Date: July 26, 2004
Updated: May 22, 2006
Bug(s): #57747
ID: 200407-20

Synopsis

Users with write access to parts of a Subversion repository may bypass read restrictions in mod_authz_svn and read any part of the repository they wish.

Background

Subversion is an advanced version control system, similar to CVS, which supports additional functionality such as the ability to move, copy and delete files and directories. A Subversion server may be run as an Apache module, a standalone server (svnserve), or on-demand over ssh (a la CVS' ":ext:" protocol). The mod_authz_svn Apache module works with Subversion in Apache to limit access to parts of Subversion repositories based on policy set by the administrator.

Affected Packages

Package: dev-util/subversion
Vulnerable: <= 1.0.4-r1
Unaffected: >= 1.0.6
Architectures: All supported architectures


Description

Users with write access to part of a Subversion repository may bypass read restrictions on any part of that repository. This can be done using an "svn copy" command to copy the portion of a repository the user wishes to read into an area where they have write access. Since copies are versioned, any such copy attempts will be readily apparent.

Impact

This is a low-risk vulnerability. It affects only users of Subversion who are running servers inside Apache and using mod_authz_svn. Additionally, this vulnerability may be exploited only by users with write access to some portion of a repository.

Workaround

Keep sensitive content separated into different Subversion repositories, or disable the Apache Subversion server and use svnserve instead.

Resolution

All Subversion users should upgrade to the latest available version:
Code:
# emerge sync
# emerge -pv ">=dev-util/subversion-1.0.6"
# emerve ">=dev-util/subversion-1.0.6"


References

ChangeLog for Subversion 1.0.6
CVE-2004-1438


Last edited by GLSA on Thu Nov 23, 2006 4:16 am; edited 4 times in total
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