ESB-2021.0041 – [Ubuntu] p11-kit: Multiple vulnerabilities

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.0041
                    USN-4677-1: p11-kit vulnerabilities
                              6 January 2021

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           p11-kit
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
                   Access Confidential Data        -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-29363 CVE-2020-29362 CVE-2020-29361

Reference:         ESB-2021.0032
                   ESB-2021.0015

Original Bulletin: 
   https://ubuntu.com/security/notices/USN-4677-1

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USN-4677-1: p11-kit vulnerabilities
05 January 2021

Several security issues were fixed in p11-kit.
Releases

  o Ubuntu 20.10
  o Ubuntu 20.04 LTS
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Packages

  o p11-kit - p11-glue utilities

Details

David Cook discovered that p11-kit incorrectly handled certain memory
operations. An attacker could use this issue to cause p11-kit to crash,
resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 20.10

  o libp11-kit0 - 0.23.21-2ubuntu0.1
  o p11-kit - 0.23.21-2ubuntu0.1
  o p11-kit-modules - 0.23.21-2ubuntu0.1

Ubuntu 20.04

  o libp11-kit0 - 0.23.20-1ubuntu0.1
  o p11-kit - 0.23.20-1ubuntu0.1
  o p11-kit-modules - 0.23.20-1ubuntu0.1

Ubuntu 18.04

  o libp11-kit0 - 0.23.9-2ubuntu0.1
  o p11-kit - 0.23.9-2ubuntu0.1
  o p11-kit-modules - 0.23.9-2ubuntu0.1

Ubuntu 16.04

  o libp11-kit0 - 0.23.2-5~ubuntu16.04.2
  o p11-kit - 0.23.2-5~ubuntu16.04.2
  o p11-kit-modules - 0.23.2-5~ubuntu16.04.2

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

References

  o CVE-2020-29362
  o CVE-2020-29363
  o CVE-2020-29361

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===========================================================================
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The University of Queensland
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Internet Email: auscert@auscert.org.au
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===========================================================================
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