#VU43806 Improper Authentication in ViewVC - CVE-2012-3356

Vulnerability identifier: #VU43806

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-3356

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ViewVC
Web applications / Modules and components for CMS

Vendor: ViewVC

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

The remote SVN views functionality (lib/vclib/svn/svn_ra.py) in ViewVC before 1.1.15 does not properly perform authorization, which allows remote attackers to bypass intended access restrictions via unspecified vectors.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ViewVC: 0.8, 0.9 - 0.9.4, 1.0.0 - 1.0.11, 1.1.0 - 1.1.13

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External links
https://osvdb.org/83225
https://viewvc.tigris.org/issues/show_bug.cgi?id=353
https://viewvc.tigris.org/source/browse/*checkout*/viewvc/tags/1.1.15/CHANGES
https://viewvc.tigris.org/source/browse/viewvc?view=rev&revision=2755
https://viewvc.tigris.org/source/browse/viewvc?view=rev&revision=2756
https://viewvc.tigris.org/source/browse/viewvc?view=rev&revision=2757
https://viewvc.tigris.org/source/browse/viewvc?view=rev&revision=2759
https://viewvc.tigris.org/source/browse/viewvc?view=rev&revision=2760
https://www.debian.org/security/2012/dsa-2563
https://www.mandriva.com/security/advisories?name=MDVSA-2013:134
https://www.openwall.com/lists/oss-security/2012/06/25/8
https://www.securityfocus.com/bid/54197
https://exchange.xforce.ibmcloud.com/vulnerabilities/76614
https://lwn.net/Articles/505096/
https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0175

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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.