WinZip 7Z File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Vulnerability Details
This vulnerability allows remote attackers to execute arbitrary code on affected installations of WinZip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of 7Z files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.
Additional Details
This vulnerability has been patched for the subscription and perpetual license versions listed below
Subscription: 76.8 and later versions
Perpetual license versions:
* 29.0 and later versions
* 28.0.16371 and later versions
* 27.0.16370 and later versions
https://kb.winzip.com/help/help_whatsnew.htm
Disclosure Timeline
- 2024-09-04 - Vulnerability reported to vendor
- 2025-02-11 - Coordinated public release of advisory
- 2025-05-02 - Advisory Updated
Credit
Jan Kopecky
