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CVE-2022-21716

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CVE-2022-21716

Published: Mar 3, 2022

Modified: Apr 22, 2025

PUBLISHED

CVSS v3.1

7.5

HIGH

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.

VendorProductVersions

twisted

twisted

affected
< 22.2.0

Weaknesses (CWE)

CWE-120

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

FEDORA-2022-71b66d4747
vendor-advisory
FEDORA-2022-9a489fa494
vendor-advisory
GLSA-202301-02
vendor-advisory

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