VULNERABILITY INTELLIGENCE
CVE-2022-21716
CVSS score7.5 HIGH
EPSS probability3.51%
CISA KEVNot currently listed
Published2022-03-03
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known workarounds.
Weakness classification
- security-advisories@github.com: CWE-120
- nvd@nist.gov: CWE-770
Primary references
- security-advisories@github.com — Patch, Third Party Advisory
- security-advisories@github.com — Release Notes, Third Party Advisory
- security-advisories@github.com — Exploit, Patch, Third Party Advisory
- security-advisories@github.com — Mailing List, Third Party Advisory
- security-advisories@github.com
- security-advisories@github.com
- security-advisories@github.com — Third Party Advisory
- security-advisories@github.com — Issue Tracking, Vendor Advisory
- security-advisories@github.com — Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Patch, Third Party Advisory