CVE-2002-1850 in the critical feed json
mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumpt…
published 2002-12-31 23 y ago modified 2026-06-16 4 mo ago also EUVD-2002-1829
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 17.4%
- EPSS 17.4% chance of exploitation in 30 days, percentile 97%
- public exploits
- 1
- Exploit-DB
Summary
mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumption) by causing a CGI script to send a large amount of data to stderr, which results in a read/write deadlock between httpd and the CGI script.
Patch / fix
- apache2 Debian 14, Debian 13, Debian 12 2.0.42-1
debian advisories DEBIAN-CVE-2002-1850
Timeline
- First public exploit (EDB-21854)
- Published
Exploit prediction
17.41% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-21854 Apache 2.0.39/40 - Oversized STDERR Buffer Denial of Service dos, 2002-09-24
- seclists.org http://seclists.org/bugtraq/2002/Sep/0253.html referenced PoC, tagged "exploit" by a source, unverified
- securityfocus.com http://www.securityfocus.com/bid/5787 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-667 Improper Locking
- Technology feeds
References
-
securitytracker.com
/id?1007823
vdb-entry, broken-link, patch, third-party-advisory
-
securityfocus.com
/bid/8725
vdb-entry, broken-link, patch, third-party-advisory
-
iss.net
/security_center/static/10200.php
vdb-entry, broken-link, patch
-
issues.apache.org
/bugzilla/show_bug.cgi?id=22030
issue-tracking, patch
-
seclists.org
/bugtraq/2002/Sep/0253.html
mailing-list, exploit, third-party-advisory
-
securityfocus.com
/bid/5787
vdb-entry, broken-link, exploit, third-party-advisory
-
cvs.apache.org
/viewcvs.cgi/httpd-2.0/modules/generators/mod_cgi.c?r1=1.148.2.7&r2=1.148.2.8
broken-link
-
issues.apache.org
/bugzilla/show_bug.cgi?id=10515
issue-tracking
-
marc.info
/?l=apache-httpd-dev&m=103291952019514&w=2
mailing-list
Sources
- CVE List CVE-2002-1850
- NVD CVE-2002-1850
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.