UpHeron
All vulnerabilities

Servers and applications

CVE-2007-3304

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."

Severity
Medium 4.7
Published
20 Jun 2007
Last changed
16 Jun 2026
Added to UpHeron
17 Oct 2026
Fixed in
1.3.39, 2.0.61, 2.2.6
Exploit chance
3.3% in the next 30 daysHigher than 88% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Needs local access · No login needed
Attacker can
Take it down
CVSS vector
AV:L/AC:M/Au:N/C:N/I:N/A:C
Sources
NVD

Affected software

SoftwareAffected versions
Apache HTTP ServerServers and applications · cpe:a:apache:http_server
  • From 1.3.0 before 1.3.39
  • From 2.0.0 before 2.0.61
  • From 2.2.0 before 2.2.6

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2007-3304
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2007-3304