Lighttpd · Lighttpd · CVE-2013-4559
**Name of the Vulnerable Software and Affected Versions**
lighttpd versions prior to 1.4.33
**Description**
The issue is related to the failure of lighttpd to check the return value of certain functions, specifically `setuid`, `setgid`, and `setgroups`. This oversight might cause lighttpd to run as root if it is restarted, potentially allowing remote attackers to gain privileges. This can be demonstrated through multiple calls to the `clone` function, which can cause `setuid` to fail when the user process limit is reached.
**Recommendations**
For versions prior to 1.4.33, update to version 1.4.33 or later to resolve the issue. As a temporary workaround, consider restricting access to sensitive resources and monitoring system logs for potential exploitation attempts.