7.5
HIGH
CVE-2022-21716
Twisted SSH Infinite SSH Version Identifier Buffer Overflow
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.

INFO

Published Date :

March 3, 2022, 9:15 p.m.

Last Modified :

Nov. 7, 2023, 3:43 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2022-21716 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2022-21716 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Oracle zfs_storage_appliance_kit
2 Oracle http_server
1 Fedoraproject fedora
1 Debian debian_linux
1 Twistedmatrix twisted
1 Twisted twisted
: Total Affected Vendor : 5 | Products : 6
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2022-21716.

URL Resource
https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9 Patch Third Party Advisory
https://github.com/twisted/twisted/releases/tag/twisted-22.2.0 Release Notes Third Party Advisory
https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx Exploit Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00009.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/
https://security.gentoo.org/glsa/202301-02 Third Party Advisory
https://twistedmatrix.com/trac/ticket/10284 Issue Tracking Vendor Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html Patch Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
AlphabugX/CVE-2022-RCE

test 反向辣鸡数据投放 CVE-2022-23305 工具 利用 教程 Exploit POC

cve-2020-

Updated: 1 year, 11 months ago
5 stars 2 fork 2 watcher
Born at : Jan. 21, 2022, 5:07 a.m. This repo has been linked 2608 different CVEs too.
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vin01/CVEs

None

Updated: 2 years, 8 months ago
0 stars 0 fork 0 watcher
Born at : March 8, 2021, 9:52 p.m. This repo has been linked 10 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2022-21716 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2022-21716 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/ [No types assigned]
    Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/ [No types assigned]
    Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/
    Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/
  • Reanalysis by [email protected]

    Jul. 24, 2023

    Action Type Old Value New Value
    Added CWE NIST CWE-770
  • Modified Analysis by [email protected]

    Jan. 13, 2023

    Action Type Old Value New Value
    Changed Reference Type https://security.gentoo.org/glsa/202301-02 No Types Assigned https://security.gentoo.org/glsa/202301-02 Third Party Advisory
  • CVE Modified by [email protected]

    Jan. 11, 2023

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202301-02 [No Types Assigned]
  • Modified Analysis by [email protected]

    Sep. 10, 2022

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/ Mailing List, Third Party Advisory
    Changed Reference Type https://www.oracle.com/security-alerts/cpuapr2022.html No Types Assigned https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jul. 03, 2022

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/ [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 20, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuapr2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Apr. 08, 2022

    Action Type Old Value New Value
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/03/msg00009.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/03/msg00009.html Mailing List, Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:twistedmatrix:twisted:*:*:*:*:*:*:*:* versions from (including) 21.7.0 up to (excluding) 22.2.0 *cpe:2.3:a:twistedmatrix:twisted:22.2.0:rc1:*:*:*:*:*:* OR *cpe:2.3:a:twistedmatrix:twisted:*:*:*:*:*:*:*:* versions from (including) 21.7.0 up to (excluding) 22.2.0
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 10, 2022

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2022/03/msg00009.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 10, 2022

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9 No Types Assigned https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9 Patch, Third Party Advisory
    Changed Reference Type https://github.com/twisted/twisted/releases/tag/twisted-22.2.0 No Types Assigned https://github.com/twisted/twisted/releases/tag/twisted-22.2.0 Release Notes, Third Party Advisory
    Changed Reference Type https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx No Types Assigned https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx Exploit, Patch, Third Party Advisory
    Changed Reference Type https://twistedmatrix.com/trac/ticket/10284 No Types Assigned https://twistedmatrix.com/trac/ticket/10284 Issue Tracking, Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:a:twistedmatrix:twisted:*:*:*:*:*:*:*:* versions from (including) 21.7.0 up to (excluding) 22.2.0 *cpe:2.3:a:twistedmatrix:twisted:22.2.0:rc1:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2022-21716 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2022-21716 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-92: Forced Integer Overflow Forced Integer Overflow CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-125: Flooding Flooding CAPEC-130: Excessive Allocation Excessive Allocation CAPEC-147: XML Ping of the Death XML Ping of the Death CAPEC-197: Exponential Data Expansion Exponential Data Expansion CAPEC-229: Serialized Data Parameter Blowup Serialized Data Parameter Blowup CAPEC-230: Serialized Data with Nested Payloads Serialized Data with Nested Payloads CAPEC-231: Oversized Serialized Data Payloads Oversized Serialized Data Payloads CAPEC-469: HTTP DoS HTTP DoS CAPEC-482: TCP Flood TCP Flood CAPEC-486: UDP Flood UDP Flood CAPEC-487: ICMP Flood ICMP Flood CAPEC-488: HTTP Flood HTTP Flood CAPEC-489: SSL Flood SSL Flood CAPEC-490: Amplification Amplification CAPEC-491: Quadratic Data Expansion Quadratic Data Expansion CAPEC-493: SOAP Array Blowup SOAP Array Blowup CAPEC-494: TCP Fragmentation TCP Fragmentation CAPEC-495: UDP Fragmentation UDP Fragmentation CAPEC-496: ICMP Fragmentation ICMP Fragmentation CAPEC-528: XML Flood XML Flood
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.46 }} 0.08%

score

0.75778

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: