ViewCVS: Information leak and XSS vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200412-26 / ViewCVS
Release Date	December 28, 2004
Latest Revision	December 28, 2004: 01
Impact	low
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
www-apps/viewcvs	<= 0.9.2_p20041207	>= 0.9.2_p20041207-r1	All supported architectures

Related bugreports: #72461, #73772

Synopsis

ViewCVS is vulnerable to an information leak and to cross-site scripting (XSS) issues.

2. Impact Information

Background

ViewCVS is a browser interface for viewing CVS and Subversion version control repositories through a web browser.

Description

The tar export functions in ViewCVS bypass the 'hide_cvsroot' and 'forbidden' settings and therefore expose information that should be kept secret (CAN-2004-0915). Furthermore, some error messages in ViewCVS do not filter user-provided information, making it vulnerable to a cross-site scripting attack (CAN-2004-1062).

Impact

By using the tar export functions, a remote attacker could access information that is configured as restricted. Through the use of a malicious request, an attacker could also inject and execute malicious script code, potentially compromising another user's browser.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All ViewCVS users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-apps/viewcvs-0.9.2_p20041207-r1"

4. References

Page updated December 28, 2004

Summary: This is a Gentoo Linux Security Advisory

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