CVE-2023-22899

Public Exploit

Description

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

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.21%
Vendor Advisory threema.ch
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://breakingthe3ma.app third party advisory
https://breakingthe3ma.app/files/Threema-PST22.pdf third party advisory exploit technical description
https://news.ycombinator.com/item?id=34316206 third party advisory
https://threema.ch/en/blog/posts/news-alleged-weaknesses-statement vendor advisory
https://github.com/srikanth-lingala/zip4j/releases third party advisory release notes
https://github.com/srikanth-lingala/zip4j/issues/485 patch exploit third party advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2023-22899?
CVE-2023-22899 has been scored as a medium severity vulnerability.
How to fix CVE-2023-22899?
To fix CVE-2023-22899, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-22899 being actively exploited in the wild?
It is possible that CVE-2023-22899 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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