#VU45107 Information disclosure in MediaWiki - CVE-2010-2787

Vulnerability identifier: #VU45107

Vulnerability risk: Medium

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

CVE-ID: CVE-2010-2787

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MediaWiki
Web applications / CMS

Vendor: MediaWiki.org

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

api.php in MediaWiki before 1.15.5 does not prevent use of public caching headers for private data, which allows remote attackers to bypass intended access restrictions and obtain sensitive information by retrieving documents from an HTTP proxy cache that has been used by a victim.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MediaWiki: 1.1.0 - 1.15.3, 1.2.0 - 1.2.6, 1.3 - 1.3.15, 1.4 - 1.4.14, 1.5 - 1.5.8

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External links
https://lists.fedoraproject.org/pipermail/package-announce/2011-April/058588.html
https://lists.fedoraproject.org/pipermail/package-announce/2011-April/058910.html
https://lists.fedoraproject.org/pipermail/package-announce/2011-April/059232.html
https://lists.fedoraproject.org/pipermail/package-announce/2011-April/059235.html
https://lists.wikimedia.org/pipermail/mediawiki-announce/2010-July/000092.html
https://openwall.com/lists/oss-security/2010/07/29/4
https://svn.wikimedia.org/viewvc/mediawiki?view=revision&revision=69776
https://www.securityfocus.com/bid/42019
https://bugzilla.redhat.com/show_bug.cgi?id=620224
https://bugzilla.redhat.com/show_bug.cgi?id=620226
https://bugzilla.wikimedia.org/show_bug.cgi?id=24565

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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.