Improper input validation in Apache Http Server

CVE-2012-0021

The log_cookie function in mod_log_config.c in the mod_log_config module in the Apache HTTP Server 2.2.17 through 2.2.21, when a threaded MPM is used, does not properly handle a %{}C format string, which allows remote attackers to cause a denial of service (daemon crash) via a cookie that lacks both a name and a value.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.308 (98.1th percentile) — read the EPSS interpretation.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2012-0021?
CVE-2012-0021 is a vulnerability in Apache Http Server, classified under Improper Input Validation. Published 2012-01-28.
Is CVE-2012-0021 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.