The Avast AV parsing engine allows virus-detection bypass via a crafted ZIP archive. This affects versions before 12 definitions 200114-0 of Antivirus Pro, Antivirus Pro Plus, and Antivirus for Linux.
Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.
Link | Tags |
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https://blog.zoller.lu/p/tzo-23-2020-avast-generic-archive.html | third party advisory |
https://seclists.org/fulldisclosure/2020/Feb/35 | third party advisory mailing list |