APT: Denial of Service -- Existing Account

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.0095
                       USN-4667-2: APT vulnerability
                              12 January 2021

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        AusCERT Security Bulletin Summary
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Product:           APT
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-27350  

Reference:         ESB-2020.4352
                   ESB-2020.4345

Original Bulletin: 
   https://ubuntu.com/security/notices/USN-4667-2

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USN-4667-2: APT vulnerability
11 January 2021

APT could be made to crash or stop responding if it opened a specially
crafted file.
Releases

  o Ubuntu 14.04 ESM

Packages

  o apt - Advanced front-end for dpkg

Details

USN-4667-1 fixed a vulnerability in APT. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Kevin Backhouse discovered that APT incorrectly handled certain packages.
A local attacker could possibly use this issue to cause APT to crash or
stop responding, resulting in a denial of service.

Update instructions

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

Ubuntu 14.04

  o apt - 1.0.1ubuntu2.24+esm3

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

References

  o CVE-2020-27350

Related notices

  o USN-4667-1 : apt

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