#VU74270 Improper Verification of Cryptographic Signature in zip4j - CVE-2023-22899

Vulnerability identifier: #VU74270

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-22899

CWE-ID: CWE-347

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
zip4j
Client/Desktop applications / Software for archiving

Vendor: Srikanth Reddy Lingala

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to zip4j does not always perform validation of MAC when decrypting a ZIP archive. A remote attacker can submit a malicious archive or tamper with data inside one.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

zip4j: 2.0 - 2.11.2

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External links
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
https://github.com/srikanth-lingala/zip4j/issues/485

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.