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GitHub_MCVE-2022-21716

HistoryMar 03, 2022 - 9:15 p.m.

CVE-2022-21716

2022-03-0321:15:07

CWE-120

CWE-770

GitHub_M

web.nvd.nist.gov

252

twisted

cve-2022-21716

event-based framework

internet applications

python 3.6+

ssh client

ssh server

security vulnerability

patch

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.4

Confidence

High

EPSS

0.004

Percentile

73.2%

JSON

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

Nvd

Vulners

Node

twistedmatrixtwistedRange21.7.0–22.2.0

Node

debiandebian_linuxMatch9.0

Node

oraclehttp_serverMatch12.2.1.3.0

oraclehttp_serverMatch12.2.1.4.0

oraclezfs_storage_appliance_kitMatch8.8

Node

fedoraprojectfedoraMatch35

fedoraprojectfedoraMatch36

CNA Affected

[
  {
    "vendor": "twisted",
    "product": "twisted",
    "versions": [
      {
        "version": "< 22.2.0",
        "status": "affected"
      }
    ]
  }
]