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.
References
Link | Resource |
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https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9 | Patch Third Party Advisory |
https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx | Exploit Patch Third Party Advisory |
https://twistedmatrix.com/trac/ticket/10284 | Issue Tracking Vendor Advisory |
https://github.com/twisted/twisted/releases/tag/twisted-22.2.0 | Release Notes Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2022/03/msg00009.html | Mailing List Third Party Advisory |
https://www.oracle.com/security-alerts/cpuapr2022.html | Patch Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/ | Mailing List Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/ | Mailing List Third Party Advisory |
https://security.gentoo.org/glsa/202301-02 | Third Party Advisory |
Configurations
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Information
Published : 2022-03-03 13:15
Updated : 2023-01-13 11:47
NVD link : CVE-2022-21716
Mitre link : CVE-2022-21716
JSON object : View
CWE
CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Products Affected
oracle
- zfs_storage_appliance_kit
- http_server
fedoraproject
- fedora
twistedmatrix
- twisted
debian
- debian_linux