CVE-2022-42919
Python Linux Forkserver Pickle Deserialization Privilege Escalation
Description
Python 3.9.x before 3.9.16 and 3.10.x before 3.10.9 on Linux allows local privilege escalation in a non-default configuration. The Python multiprocessing library, when used with the forkserver start method on Linux, allows pickles to be deserialized from any user in the same machine local network namespace, which in many system configurations means any user on the same machine. Pickles can execute arbitrary code. Thus, this allows for local user privilege escalation to the user that any forkserver process is running as. Setting multiprocessing.util.abstract_sockets_supported to False is a workaround. The forkserver start method for multiprocessing is not the default start method. This issue is Linux specific because only Linux supports abstract namespace sockets. CPython before 3.9 does not make use of Linux abstract namespace sockets by default. Support for users manually specifying an abstract namespace socket was added as a bugfix in 3.7.8 and 3.8.3, but users would need to make specific uncommon API calls in order to do that in CPython before 3.9.
INFO
Published Date :
Nov. 7, 2022, 12:15 a.m.
Last Modified :
Nov. 7, 2023, 3:53 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2022-42919 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2022-42919.
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).
None
TypeScript JavaScript Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-42919 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-42919 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 MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PI5DYIED6U26BGX5IRZWNCP6TY4M2ZGZ/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VCRKBB5Y5EWTJUNC7LK665WO64DDXSTN/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FKGCQPIVHEAIJ77R3RSNSQWYBUDVWDKU/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P2LHWWEI5OBQ6RELULMVU6KMDYG4WZXH/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XX6LLAXGZVZ327REY6MDZRMMP47LJ53P/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R6KGIRHSENZ4QAB234Z36HVIDTRJ3MFI/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QLUGZSEAO3MBWGKCUSMKQIRYJZKJCIOB/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RDK3ZZBRYFO47ET3N4BNTKVXN47U6ICY/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/VCRKBB5Y5EWTJUNC7LK665WO64DDXSTN/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/PI5DYIED6U26BGX5IRZWNCP6TY4M2ZGZ/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/FKGCQPIVHEAIJ77R3RSNSQWYBUDVWDKU/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/P2LHWWEI5OBQ6RELULMVU6KMDYG4WZXH/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/XX6LLAXGZVZ327REY6MDZRMMP47LJ53P/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/R6KGIRHSENZ4QAB234Z36HVIDTRJ3MFI/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/QLUGZSEAO3MBWGKCUSMKQIRYJZKJCIOB/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/RDK3ZZBRYFO47ET3N4BNTKVXN47U6ICY/ -
CVE Modified by [email protected]
May. 03, 2023
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202305-02 [No Types Assigned] -
Modified Analysis by [email protected]
Feb. 05, 2023
Action Type Old Value New Value Changed Reference Type https://github.com/python/cpython/compare/v3.10.8...v3.10.9 No Types Assigned https://github.com/python/cpython/compare/v3.10.8...v3.10.9 Release Notes Changed Reference Type https://github.com/python/cpython/compare/v3.9.15...v3.9.16 No Types Assigned https://github.com/python/cpython/compare/v3.9.15...v3.9.16 Release Notes Changed Reference Type https://github.com/python/cpython/issues/97514#issuecomment-1310277840 No Types Assigned https://github.com/python/cpython/issues/97514#issuecomment-1310277840 Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/FKGCQPIVHEAIJ77R3RSNSQWYBUDVWDKU/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/FKGCQPIVHEAIJ77R3RSNSQWYBUDVWDKU/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/P2LHWWEI5OBQ6RELULMVU6KMDYG4WZXH/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/P2LHWWEI5OBQ6RELULMVU6KMDYG4WZXH/ Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/PI5DYIED6U26BGX5IRZWNCP6TY4M2ZGZ/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/PI5DYIED6U26BGX5IRZWNCP6TY4M2ZGZ/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/QLUGZSEAO3MBWGKCUSMKQIRYJZKJCIOB/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/QLUGZSEAO3MBWGKCUSMKQIRYJZKJCIOB/ Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/R6KGIRHSENZ4QAB234Z36HVIDTRJ3MFI/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/R6KGIRHSENZ4QAB234Z36HVIDTRJ3MFI/ Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/RDK3ZZBRYFO47ET3N4BNTKVXN47U6ICY/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/RDK3ZZBRYFO47ET3N4BNTKVXN47U6ICY/ Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/VCRKBB5Y5EWTJUNC7LK665WO64DDXSTN/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/VCRKBB5Y5EWTJUNC7LK665WO64DDXSTN/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/XX6LLAXGZVZ327REY6MDZRMMP47LJ53P/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/XX6LLAXGZVZ327REY6MDZRMMP47LJ53P/ Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20221209-0006/ No Types Assigned https://security.netapp.com/advisory/ntap-20221209-0006/ Third Party Advisory Changed CPE Configuration OR *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.9.0 up to (excluding) 3.10.8 OR *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.7.3 up to (including) 3.7.15 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.8.3 up to (including) 3.8.15 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.9.0 up to (excluding) 3.9.16 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.10.0 up to (excluding) 3.10.9 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jan. 18, 2023
Action Type Old Value New Value Changed Description Python 3.9.x and 3.10.x through 3.10.8 on Linux allows local privilege escalation in a non-default configuration. The Python multiprocessing library, when used with the forkserver start method on Linux, allows pickles to be deserialized from any user in the same machine local network namespace, which in many system configurations means any user on the same machine. Pickles can execute arbitrary code. Thus, this allows for local user privilege escalation to the user that any forkserver process is running as. Setting multiprocessing.util.abstract_sockets_supported to False is a workaround. The forkserver start method for multiprocessing is not the default start method. This issue is Linux specific because only Linux supports abstract namespace sockets. CPython before 3.9 does not make use of Linux abstract namespace sockets by default. Support for users manually specifying an abstract namespace socket was added as a bugfix in 3.7.8 and 3.8.3, but users would need to make specific uncommon API calls in order to do that in CPython before 3.9. Python 3.9.x before 3.9.16 and 3.10.x before 3.10.9 on Linux allows local privilege escalation in a non-default configuration. The Python multiprocessing library, when used with the forkserver start method on Linux, allows pickles to be deserialized from any user in the same machine local network namespace, which in many system configurations means any user on the same machine. Pickles can execute arbitrary code. Thus, this allows for local user privilege escalation to the user that any forkserver process is running as. Setting multiprocessing.util.abstract_sockets_supported to False is a workaround. The forkserver start method for multiprocessing is not the default start method. This issue is Linux specific because only Linux supports abstract namespace sockets. CPython before 3.9 does not make use of Linux abstract namespace sockets by default. Support for users manually specifying an abstract namespace socket was added as a bugfix in 3.7.8 and 3.8.3, but users would need to make specific uncommon API calls in order to do that in CPython before 3.9. Added Reference https://github.com/python/cpython/compare/v3.10.8...v3.10.9 [No Types Assigned] Added Reference https://github.com/python/cpython/compare/v3.9.15...v3.9.16 [No Types Assigned] -
CVE Modified by [email protected]
Jan. 13, 2023
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/RDK3ZZBRYFO47ET3N4BNTKVXN47U6ICY/ [No Types Assigned] -
CVE Modified by [email protected]
Jan. 12, 2023
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/QLUGZSEAO3MBWGKCUSMKQIRYJZKJCIOB/ [No Types Assigned] -
CVE Modified by [email protected]
Dec. 14, 2022
Action Type Old Value New Value Changed Description Python 3.9.x and 3.10.x through 3.10.8 on Linux allows local privilege escalation in a non-default configuration. The Python multiprocessing library, when used with the forkserver start method on Linux, allows pickles to be deserialized from any user in the same machine local network namespace, which in many system configurations means any user on the same machine. Pickles can execute arbitrary code. Thus, this allows for local user privilege escalation to the user that any forkserver process is running as. Setting multiprocessing.util.abstract_sockets_supported to False is a workaround. The forkserver start method for multiprocessing is not the default start method. This issue is Linux specific because only Linux supports abstract namespace sockets. CPython before 3.9 does not make use of Linux abstract namespace sockets by default. Support for users manually specifying an abstract namespace socket was added as a bugfix in 3.7.8 and 3.8.4, but users would need to make specific uncommon API calls in order to do that in CPython before 3.9. Python 3.9.x and 3.10.x through 3.10.8 on Linux allows local privilege escalation in a non-default configuration. The Python multiprocessing library, when used with the forkserver start method on Linux, allows pickles to be deserialized from any user in the same machine local network namespace, which in many system configurations means any user on the same machine. Pickles can execute arbitrary code. Thus, this allows for local user privilege escalation to the user that any forkserver process is running as. Setting multiprocessing.util.abstract_sockets_supported to False is a workaround. The forkserver start method for multiprocessing is not the default start method. This issue is Linux specific because only Linux supports abstract namespace sockets. CPython before 3.9 does not make use of Linux abstract namespace sockets by default. Support for users manually specifying an abstract namespace socket was added as a bugfix in 3.7.8 and 3.8.3, but users would need to make specific uncommon API calls in order to do that in CPython before 3.9. Added Reference https://github.com/python/cpython/issues/97514#issuecomment-1310277840 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 09, 2022
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20221209-0006/ [No Types Assigned] -
CVE Modified by [email protected]
Dec. 01, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/R6KGIRHSENZ4QAB234Z36HVIDTRJ3MFI/ [No Types Assigned] -
CVE Modified by [email protected]
Nov. 23, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/XX6LLAXGZVZ327REY6MDZRMMP47LJ53P/ [No Types Assigned] -
CVE Modified by [email protected]
Nov. 22, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/P2LHWWEI5OBQ6RELULMVU6KMDYG4WZXH/ [No Types Assigned] -
CVE Modified by [email protected]
Nov. 19, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/FKGCQPIVHEAIJ77R3RSNSQWYBUDVWDKU/ [No Types Assigned] -
CVE Modified by [email protected]
Nov. 18, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/VCRKBB5Y5EWTJUNC7LK665WO64DDXSTN/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/PI5DYIED6U26BGX5IRZWNCP6TY4M2ZGZ/ [No Types Assigned] -
Initial Analysis by [email protected]
Nov. 08, 2022
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/python/cpython/issues/97514 No Types Assigned https://github.com/python/cpython/issues/97514 Third Party Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.9.0 up to (excluding) 3.10.8
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-42919 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-2022-42919
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.08236
percentile