Vulnerability CVE-2023-22899


Published: 2023-01-10

Description:
Zip4j through 2.11.2, as used in Threema and other products, does not always check the MAC when decrypting a ZIP archive.

 References:
https://breakingthe3ma.app/files/Threema-PST22.pdf
https://news.ycombinator.com/item?id=34316206
https://github.com/srikanth-lingala/zip4j/releases
https://breakingthe3ma.app
https://threema.ch/en/blog/posts/news-alleged-weaknesses-statement

Copyright 2026, cxsecurity.com

 

Back to Top