#VU65111 Allocation of Resources Without Limits or Throttling in Wikibase - CVE-2022-34750

Vulnerability identifier: #VU65111

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-34750

CWE-ID: CWE-770

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Wikibase
Web applications / Modules and components for CMS

Vendor: MediaWiki.org

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to allocation of resources without limits or throttling. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Wikibase: 1.38.1

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External links
https://gerrit.wikimedia.org/r/q/I8171bfef73e525d73efa60b407ce147130ea4742
https://gerrit.wikimedia.org/r/q/Id89a9b08e40f075d2d422cafd03668dff3ce7fc9
https://phabricator.wikimedia.org/T308659

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.