OpenEXR: Denial of Service -- Existing Account

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.2397
                    USN-4418-1: OpenEXR vulnerabilities
                               15 July 2020

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

Product:           OpenEXR
Publisher:         Ubuntu
Operating System:  Ubuntu
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-15306 CVE-2020-15305 

Original Bulletin: 
   https://usn.ubuntu.com/4418-1/

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running OpenEXR check for an updated version of the software for 
         their operating system.

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USN-4418-1: OpenEXR vulnerabilities
06 July 2020

openexr vulnerabilities
Releases

  o Ubuntu 20.04 LTS
  o Ubuntu 19.10
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Packages

  o openexr - tools for the OpenEXR image format

Details

It was discovered that OpenEXR incorrectly handled certain malformed EXR
image files. If a user were tricked into opening a crafted EXR image file,
a remote attacker could cause 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 20.04

  o libopenexr24 - 2.3.0-6ubuntu0.2
  o openexr - 2.3.0-6ubuntu0.2

Ubuntu 19.10

  o libopenexr23 - 2.2.1-4.1ubuntu1.2
  o openexr - 2.2.1-4.1ubuntu1.2

Ubuntu 18.04

  o libopenexr22 - 2.2.0-11.1ubuntu1.3
  o openexr - 2.2.0-11.1ubuntu1.3

Ubuntu 16.04

  o libopenexr22 - 2.2.0-10ubuntu2.3
  o openexr - 2.2.0-10ubuntu2.3

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

References

  o CVE-2020-15305
  o CVE-2020-15306

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