1. Ubuntu Security Notices
  2. USN-6434-1

USN-6434-1: PMIx vulnerability

Publication date

17 October 2023

Overview

PMIx could be made to overwrite files.

Releases

Packages

  • pmix - Development files for the PMI library (OpenMPI )

Details

Francois Diakhate discovered that PMIx did not properly handle race
conditions in the pmix library, which could lead to unwanted privilege
escalation. An attacker could possibly use this issue to obtain ownership
of an arbitrary file on the filesystem, under the default configuration
of the application.

Francois Diakhate discovered that PMIx did not properly handle race
conditions in the pmix library, which could lead to unwanted privilege
escalation. An attacker could possibly use this issue to obtain ownership
of an arbitrary file on the filesystem, under the default configuration
of the application.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
22.04 jammy libpmix-bin –  4.1.2-2ubuntu1+esm1  
libpmix2 –  4.1.2-2ubuntu1+esm1  
python3-pmix –  4.1.2-2ubuntu1+esm1  
20.04 focal libpmi1-pmix –  3.1.5-1ubuntu0.1~esm1  
libpmi2-pmix –  3.1.5-1ubuntu0.1~esm1  
libpmix2 –  3.1.5-1ubuntu0.1~esm1  
18.04 bionic libpmi1-pmix –  2.1.1~rc1-1ubuntu0.1~esm1  
libpmi2-pmix –  2.1.1~rc1-1ubuntu0.1~esm1  
libpmix2 –  2.1.1~rc1-1ubuntu0.1~esm1  

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References

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