Vulnerability identifier: #VU49104
Vulnerability risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-200
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
MediaWiki
Web applications /
CMS
Vendor: MediaWiki.org
Description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the way application handles missing and hidden user accounts. A remote attacker can expose sensitive information about the hidden status to unprivileged viewers.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
MediaWiki: 1.35.0, 1.34 - 1.34.4, 1.33.0 - 1.33.4, 1.32.0 - 1.32.6, 1.31.0 - 1.31.10, 1.30.0 - 1.30.2
External links
http://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html
http://phabricator.wikimedia.org/T120883
http://www.debian.org/security/2020/dsa-4816
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.