ESB-2020.3161 – [Ubuntu] bsdiff: Execute arbitrary code/commands – Existing account

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.3161
                    USN-4500-1: bsdiff vulnerabilities
                             16 September 2020

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

Product:           bsdiff
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Denial of Service               -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-9862  

Reference:         ESB-2019.4492

Original Bulletin: 
   https://usn.ubuntu.com/4500-1/

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USN-4500-1: bsdiff vulnerabilities
15 September 2020

bsdiff could be made to crash or run programs as your login if it
opened a specially crafted file.
Releases

  o Ubuntu 16.04 LTS

Packages

  o bsdiff - generate/apply a patch between two binary files

Details

It was discovered that bsdiff mishandled certain input. If a user were tricked
into opening a malicious file, an attacker could cause bsdiff to crash or
potentially execute arbitrary code.

Update instructions

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

Ubuntu 16.04

  o bsdiff - 4.3-15+deb8u1build0.16.04.1

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

References

  o CVE-2014-9862

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