Description
The shared memory scoreboard in the HTTP daemon for Apache 1.3.x before 1.3.27 allows any user running as the Apache UID to send a SIGUSR1 signal to any process as root, resulting in a denial of service (process kill) or possibly other behaviors that would not normally be allowed, by modifying the parent[].pid and parent[].last_rtime segments in the scoreboard.
Remediation
References
Related Vulnerabilities
Joomla CVE-2012-2748 Vulnerability (CVE-2012-2748)
WordPress Plugin WPBook Cross-Site Request Forgery (2.7)
WordPress Plugin leads5050-visitor-insights Security Bypass (1.0.5)
Django Permissions, Privileges, and Access Controls Vulnerability (CVE-2014-0473)
Zope Web Application Server Other Vulnerability (CVE-2000-0483)