Bug 702512 (CVE-2011-1765, CVE-2011-1766) - CVE-2011-1765 mediawiki: two vulnerabilities fixed in 1.16.5
Summary: CVE-2011-1765 mediawiki: two vulnerabilities fixed in 1.16.5
Alias: CVE-2011-1765, CVE-2011-1766
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 696362 702513
TreeView+ depends on / blocked
Reported: 2011-05-05 23:04 UTC by Vincent Danen
Modified: 2021-10-19 21:49 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2021-10-19 21:49:12 UTC

Attachments (Terms of Use)

Description Vincent Danen 2011-05-05 23:04:28 UTC
Mediawiki 1.16.5 was released [1] to correct two security flaws:

The first issue is yet another recurrence of the Internet Explorer 6
XSS vulnerability that caused the release of 1.16.4. It was pointed
out that there are dangerous extensions with more than four
characters, so the regular expressions we introduced had to be updated
to match longer extensions. (CVE-2011-1765)

For more details, see https://bugzilla.wikimedia.org/show_bug.cgi?id=28534

The second issue allows unauthenticated users to gain additional
rights, on wikis where $wgBlockDisablesLogin is enabled. By default,
it is disabled. The issue occurs when a malicious user sends cookies
which contain the user name and user ID of a "victim" account. In
certain circumstances, the rights of the victim are loaded and persist
throughout the malicious request, allowing the malicious user to
perform actions with the victim's rights. (CVE-2011-1766)

$wgBlockDisablesLogin is a feature which is sometimes used on private
wikis to prevent users who have an account from logging in and viewing
content on the wiki.

For more details, see https://bugzilla.wikimedia.org/show_bug.cgi?id=28639

[1] http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-May/000098.html

Comment 1 Vincent Danen 2011-05-05 23:08:29 UTC
Created mediawiki tracking bugs for this issue

Affects: fedora-all [bug 702513]

Comment 2 Vincent Danen 2011-05-05 23:08:31 UTC
Created mediawiki116 tracking bugs for this issue

Affects: epel-all [bug 696362]

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