Apache httpd 1.3.37, 2.0.59, and 2.2.4 with the Prefork MPM module, allows local users to cause a denial of service by modifying the worker_score and process_score arrays to reference an arbitrary process ID, which is sent a SIGUSR1 signal from the master process, aka "SIGUSR1 killer."
2007-06-20T22:30:00.000
2025-04-09T00:30:58.490
Deferred
CVSSv2: 4.7 (MEDIUM)
AV:L/AC:M/Au:N/C:N/I:N/A:C
3.4
6.9
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Application | apache | http_server | < 1.3.39 | Yes |
Application | apache | http_server | < 2.0.61 | Yes |
Application | apache | http_server | < 2.2.6 | Yes |
Operating System | fedoraproject | fedora | 7 | Yes |
Operating System | redhat | enterprise_linux_desktop | 5.0 | Yes |
Operating System | redhat | enterprise_linux_server | 5.0 | Yes |
Operating System | redhat | enterprise_linux_workstation | 5.0 | Yes |
Operating System | canonical | ubuntu_linux | 6.06 | Yes |
Operating System | canonical | ubuntu_linux | 6.10 | Yes |
Operating System | canonical | ubuntu_linux | 7.04 | Yes |