CVE-2002-1850

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 17.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2002-12-31 · updated 2026-06-16
Weakness: CWE-667

Description

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.

Affected products

Apache HTTP Server: 2.0.39, 2.0.40

References

http://cvs.apache.org/viewcvs.cgi/httpd-2.0/modules/generators/mod_cgi.c?r1=1.148.2.7&r2=1.148.2.8
http://issues.apache.org/bugzilla/show_bug.cgi?id=10515
http://issues.apache.org/bugzilla/show_bug.cgi?id=22030
http://marc.info/?l=apache-httpd-dev&m=103291952019514&w=2
http://seclists.org/bugtraq/2002/Sep/0253.html
http://securitytracker.com/id?1007823
http://www.iss.net/security_center/static/10200.php
http://www.securityfocus.com/bid/5787
http://www.securityfocus.com/bid/8725
http://cvs.apache.org/viewcvs.cgi/httpd-2.0/modules/generators/mod_cgi.c?r1=1.148.2.7&r2=1.148.2.8
http://issues.apache.org/bugzilla/show_bug.cgi?id=10515
http://issues.apache.org/bugzilla/show_bug.cgi?id=22030

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