#VU61017 Buffer overflow in Twisted Web - CVE-2022-21716

Vulnerability identifier: #VU61017

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-2022-21716

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Twisted Web
Server applications / Web servers

Vendor: Twisted Matrix Labs

Description

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

The vulnerability exists due to a boundary error. A remote attacker can trigger memory corruption and cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Twisted Web: 21.7.0 - 22.1.0

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External links
https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9
https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx
https://twistedmatrix.com/trac/ticket/10284
https://github.com/twisted/twisted/releases/tag/twisted-22.2.0

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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.