CVE-2002-1850 Denial of service in n/a

What is CVE-2002-1850?

CVE-2002-1850 is a high-severity denial of service vulnerability in Apache Http Server, published on 28 Jun 2005. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-667

Which versions are affected by CVE-2002-1850?

It affects 1 product.

Products include Apache Http Server.

How do I fix CVE-2002-1850?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2002-1850 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2002-1850 exists.

Public exploit code: 1 Exploit-DB entry.

Other vulnerabilities in Apache Http Server

• CVE-2021-42013 Apache HTTP Server Path Traversal Exploited Critical 9.8
• CVE-2024-38475 Apache HTTP Server Improper Escaping of Output Exploited Critical 9.1
• CVE-2021-40438 Apache HTTP Server-Side Request Forgery (SSRF) Exploited Critical 9.0
• CVE-2019-0211 Apache HTTP Server Privilege Escalation Exploited High 7.8
• CVE-2021-41773 Apache HTTP Server Path Traversal Exploited High 7.5

All Apache Http Server vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2002-1850, GHSA-vfpr-g7cv-3qw9.