ESB-2020.2653 – [Ubuntu] Ghostscript: Execute arbitrary code/commands – Remote/unauthenticated

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.2653
                   USN-4445-1: Ghostscript vulnerability
                               4 August 2020

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

Product:           Ghostscript
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated      
                   Modify Arbitrary Files          -- Remote/Unauthenticated      
                   Denial of Service               -- Remote/Unauthenticated      
                   Read-only Data Access           -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-15900  

Reference:         ESB-2020.2639

Original Bulletin: 
   https://usn.ubuntu.com/4445-1/

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USN-4445-1: Ghostscript vulnerability
03 August 2020

Ghostscript could be made to crash, access files, or run programs if it
opened a specially crafted file.
Releases

  o Ubuntu 20.04 LTS

Packages

  o ghostscript - PostScript and PDF interpreter

Details

It was discovered that Ghostscript incorrectly handled certain PostScript
files. If a user or automated system were tricked into processing a
specially crafted file, a remote attacker could possibly use this issue to
access arbitrary files, execute arbitrary code,

Update instructions

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

Ubuntu 20.04

  o ghostscript - 9.50~dfsg-5ubuntu4.1
  o libgs9 - 9.50~dfsg-5ubuntu4.1

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

References

  o CVE-2020-15900

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Read More

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