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CVE-2022-42919 Affecting python39-tkinter package, versions <0:3.9.13-2.module+el8.7.0+20879+a85b87b0

Severity

 Recommended
0.0
high
0
10

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.04% (11th percentile)

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  • Snyk ID SNYK-ORACLE8-PYTHON39TKINTER-3138482
  • published 22 Nov 2022
  • disclosed 7 Nov 2022
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Introduced: 7 Nov 2022

CVE-2022-42919 Open this link in a new tab

How to fix?

Upgrade Oracle:8 python39-tkinter to version 0:3.9.13-2.module+el8.7.0+20879+a85b87b0 or higher.
This issue was patched in ELSA-2022-8492.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python39-tkinter package and not the python39-tkinter package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

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.

References

CVSS Scores

version 3.1
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NVD

7.8 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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SUSE

7.8 high
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Red Hat

7.8 high