CVEvulnerability

CVE-2022-21716

7.5 HIGH Published 2022-03-03 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-03-03
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-120, CWE-770

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.

Affected configurations

• twisted twisted (>= 21.7.0 < 22.2.0) • debian debian linux 9.0 • oracle http server 12.2.1.3.0 • oracle http server 12.2.1.4.0 • oracle zfs storage appliance kit 8.8 • fedoraproject fedora 35 • fedoraproject fedora 36

Related

Weakness · CWE (2)

  • CWE-120 Buffer Copy without Checking Size of Input weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling weakness

References