CVE-2020-27621 Information disclosure in n/a
The FileImporter extension fails to log user IP addresses correctly, preventing proper audit trails and attribution of user actions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-27621?
CVE-2020-27621 is a medium-severity vulnerability in Mediawiki Mediawiki, published on 22 Oct 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The FileImporter extension in MediaWiki through 1.35.0 was not properly attributing various user actions to a specific user's IP address. Instead, for various actions, it would report the IP address of an internal Wikimedia Foundation server by omitting X-Forwarded-For data. This resulted in an inability to properly audit and attribute various user actions performed via the FileImporter extension.
Which versions are affected by CVE-2020-27621?
1 open source package ship an affected version, including mediawiki. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mediawiki Bitnami | All versions | 1.35.1 |
Products include Mediawiki Mediawiki.
How do I fix CVE-2020-27621?
Upgrade mediawiki to 1.35.1 or later.
Is CVE-2020-27621 being exploited?
There is no known exploitation of CVE-2020-27621 in the wild and no public exploit code.
Other vulnerabilities in Mediawiki Mediawiki
Sources
Also known as BIT-mediawiki-2020-27621, GHSA-hh63-773r-23jr.