CVSS3
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
Confidence
High
EPSS
Percentile
73.2%
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.
[
{
"vendor": "twisted",
"product": "twisted",
"versions": [
{
"version": "< 22.2.0",
"status": "affected"
}
]
}
]
github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9
github.com/twisted/twisted/releases/tag/twisted-22.2.0
github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx
lists.debian.org/debian-lts-announce/2022/03/msg00009.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/
security.gentoo.org/glsa/202301-02
twistedmatrix.com/trac/ticket/10284
www.oracle.com/security-alerts/cpuapr2022.html
CVSS3
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
Confidence
High
EPSS
Percentile
73.2%