CVE-2015-8623: CSRF
First published: Thu Mar 23 2017(Updated: )
The User::matchEditToken function in includes/User.php in MediaWiki before 1.23.12 and 1.24.x before 1.24.5 does not perform token comparison in constant time before returning, which allows remote attackers to guess the edit token and bypass CSRF protection via a timing attack, a different vulnerability than CVE-2015-8624.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Wikimedia MediaWiki | <=1.23.11 | |
| Wikimedia MediaWiki | =1.24.0 | |
| Wikimedia MediaWiki | =1.24.1 | |
| Wikimedia MediaWiki | =1.24.2 | |
| Wikimedia MediaWiki | =1.24.3 | |
| Wikimedia MediaWiki | =1.24.4 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2015-8623?
CVE-2015-8623 has a severity rating that indicates it allows remote attackers to bypass CSRF protection.
How do I fix CVE-2015-8623?
To fix CVE-2015-8623, upgrade MediaWiki to versions 1.23.12 or later, or 1.24.5 or later.
Which versions of MediaWiki are affected by CVE-2015-8623?
MediaWiki versions before 1.23.12 and 1.24.x before 1.24.5 are affected by CVE-2015-8623.
What kind of attack does CVE-2015-8623 allow?
CVE-2015-8623 allows attackers to guess the edit token using a timing attack.
What component of MediaWiki is vulnerable in CVE-2015-8623?
The User::matchEditToken function in includes/User.php is the vulnerable component in CVE-2015-8623.
- agent/type
- agent/remedy
- agent/references
- agent/weakness
- agent/severity
- agent/author
- agent/softwarecombine
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/first-publish-date
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/mediawiki
- canonical/wikimedia mediawiki
- version/wikimedia mediawiki/1.23.11
- version/wikimedia mediawiki/1.24.0
- version/wikimedia mediawiki/1.24.1
- version/wikimedia mediawiki/1.24.2
- version/wikimedia mediawiki/1.24.3
- version/wikimedia mediawiki/1.24.4