[IT-SecNots] [MediaWiki-announce] MediaWiki Extensions and Skins Security Release Supplement (1.31.9/1.34.3/1.35.0)

[Scott Bassett <sbassett AT wikimedia.org>]

Greetings-

With the security/maintenance release of MediaWiki 1.31.9/1.34.3/1.35.0
[0], we would also like to provide this supplementary announcement of
MediaWiki extensions and skins with now-public Phabricator tasks, security
patches and backports [1]:

== MobileFrontend ==
+ (T238075) - Alert group Cookie(s) without HttpOnly flag are set due to
default configuration
< https://gerrit.wikimedia.org/r/q/I8e84f1cbc8878974532b511cebd9de40c5de55c6
>

== MobileFrontend ==
+ (T262213, CVE-2020-26120) - XSS on Pages viewed within MobileFrontend
extension
< https://gerrit.wikimedia.org/r/q/I42e079bc875d17b336ab015f3678eaedc26e10ea
>

== CentralAuth ==
+ (T260485, CVE-2020-25869) - CentralAuth uses wrong actor ID when locally
suppressing the user
< https://gerrit.wikimedia.org/r/q/Iaa886a1824e5a74f4501ca7e28917c780222aac0
>
< https://gerrit.wikimedia.org/r/q/I2336954c665366a99f9995df9b08071d4de6db79
>

== FileImporter ==
+ (T262628, CVE-2020-26121) - FileImporter imports the file even when the
target page is protected on Commons
< https://gerrit.wikimedia.org/r/q/Ib852a96afc4dca10516d0510e69c10f9892b351b
>

The Wikimedia Security Team recommends updating these extensions and/or
skins to the current master branch or relevant, supported release branch
[2] as soon as possible. Some of the referenced Phabricator tasks above
_may_ still be private. Unfortunately, when security issues are reported,
sometimes sensitive information is exposed and since Phabricator is
historical, we cannot make these tasks public without exposing this
sensitive information. If you have any additional questions or concerns
regarding this update, please feel free to contact security AT wikimedia.org
or file a security task within Phabricator [3].

[0]
https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-September/000260.html
[1] https://phabricator.wikimedia.org/T256342
[2] https://www.mediawiki.org/wiki/Version_lifecycle
[3] https://www.mediawiki.org/wiki/Reporting_security_bugs

-- 
Scott Bassett
sbassett AT wikimedia.org
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