DSA-4767: -1 mediawiki -- security update

Published Sep 25, 2020
·
Updated

mediawiki - security update

Other sources

Multiple security issues were discovered in MediaWiki, a website engine for collaborative work: SpecialUserRights could leak whether a user existed or not, multiple code paths lacked HTML sanitisation allowing for cross-site scripting and TOTP validation applied insufficient rate limiting against brute force attempts.

Affected Software

2 affected components
debian/mediawiki
debian/mediawiki

Event History

Sep 25, 2020
Advisory Published
12:00 AM

Frequently Asked Questions

1

Which MediaWiki features are implicated by these issues?

The affected areas include SpecialUserRights, multiple code paths that render HTML without sanitisation, and TOTP validation.

2

What could an attacker achieve through the cross-site scripting issues?

The affected code paths allow cross-site scripting because they lack HTML sanitisation. The provided information does not identify the specific paths or required attacker privileges.

3

Is account-related information exposed?

SpecialUserRights could reveal whether a user exists, allowing user-account enumeration.

4

What makes the TOTP issue relevant to authentication security?

TOTP validation had insufficient rate limiting against brute-force attempts, which could make repeated attempts against TOTP authentication possible.

Contact

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