Resource management error in ViewVC

1) Resource management error

EUVDB-ID: #VU45031

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2009-5024

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

ViewVC before 1.1.11 allows remote attackers to bypass the cvsdb row_limit configuration setting, and consequently conduct resource-consumption attacks, via the limit parameter, as demonstrated by a "query revision history" request.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ViewVC: 0.8 - 1.1.9

External links

http://openwall.com/lists/oss-security/2011/05/19/1
http://openwall.com/lists/oss-security/2011/05/19/9
http://viewvc.tigris.org/issues/show_bug.cgi?id=433
http://viewvc.tigris.org/source/browse/*checkout*/viewvc/tags/1.1.11/CHANGES
http://viewvc.tigris.org/source/browse/viewvc/trunk/lib/cvsdb.py?diff_format=u&view=log#rev2547
http://viewvc.tigris.org/source/browse/viewvc/trunk/lib/viewvc.py?diff_format=u&r1=2547&r2=2546&pathrev=2547
http://www.debian.org/security/2012/dsa-2563
http://www.securityfocus.com/bid/47928

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.