RARLAB WinRAR before 6.23 allows attackers to execute arbitrary code when a user attempts to view a benign file within a ZIP archive. The issue occurs because a ZIP archive may include a benign file (such as an ordinary .JPG file) and also a folder that has the same name as the benign file, and the contents of the folder (which may include executable content) are processed during an attempt to access only the benign file. This was exploited in the wild in April through October 2023.
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
The product does not properly distinguish between different types of elements in a way that leads to insecure behavior.
| Link | Tags |
|---|---|
| https://www.group-ib.com/blog/cve-2023-38831-winrar-zero-day/ | press/media coverage third party advisory exploit |
| https://www.bleepingcomputer.com/news/security/winrar-zero-day-exploited-since-april-to-hack-trading-accounts/ | press/media coverage third party advisory exploit |
| https://news.ycombinator.com/item?id=37236100 | issue tracking |
| http://packetstormsecurity.com/files/174573/WinRAR-Remote-Code-Execution.html | third party advisory vdb entry exploit |
| https://blog.google/threat-analysis-group/government-backed-actors-exploiting-winrar-vulnerability/ | third party advisory exploit |