libproxy: Denial of Service -- Remote/Unauthenticated

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.3196
                    USN-4514-1: libproxy vulnerability
                             18 September 2020

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

Product:           libproxy
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-25219  

Reference:         ESB-2020.3136

Original Bulletin: 
   https://usn.ubuntu.com/4514-1/

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USN-4514-1: libproxy vulnerability
17 September 2020

libproxy could be made to crash if it received a specially crafted PAC file.
Releases

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

Packages

  o libproxy - automatic proxy configuration management library

Details

It was discovered that libproxy incorrectly handled certain PAC files.
An attacker could possibly use this issue to cause a denial of service.

Update instructions

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

Ubuntu 20.04

  o libproxy1v5 - 0.4.15-10ubuntu1.1

Ubuntu 18.04

  o libproxy1v5 - 0.4.15-1ubuntu0.1

Ubuntu 16.04

  o libproxy1v5 - 0.4.11-5ubuntu1.1

After a standard system update you need to restart your session to make
all the necessary changes.

References

  o CVE-2020-25219

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