Vulnerability in Apache HTTP Server
CVE-2002-0839
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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 7.2 (High). Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.009 (60.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Apache HTTP Server
- Debian Linux — versions 2.2, 3.0
Public proof-of-concept exploits
References
- www.debian.org/security/2002/dsa-188 (vendor-advisory, Third Party Advisory)
- marc.info/ (Mailing List, Third Party Advisory)
- www.linuxsecurity.com/advisories/other_advisory-2414.html (vendor-advisory, Broken Link)
- online.securityfocus.com/advisories/4617 (vendor-advisory, VDB Entry, Third Party Advisory)
- www.debian.org/security/2002/dsa-187 (vendor-advisory, Third Party Advisory)
- marc.info/ (vendor-advisory, Mailing List, Third Party Advisory, Issue Tracking)
- archives.neohapsis.com/archives/vulnwatch/2002-q4/0012.html (Broken Link, Vendor Advisory, mailing-list, Patch)
- www.apacheweek.com/issues/02-10-04 (Release Notes, Vendor Advisory)
- www.securityfocus.com/bid/5884 (VDB Entry, Third Party Advisory, vdb-entry)
- www.debian.org/security/2002/dsa-195 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2002-0839?
- CVE-2002-0839 is a vulnerability in Apache HTTP Server. Published 2002-10-11.
- Is CVE-2002-0839 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.