CVE-2012-0021

low Apache
CVSS v3 Base Score
2.6
AV:N/AC:H/Au:N/C:N/I:N/A:P
EPSS Score
33.0%
Exploitation probability in 30 days
Top 3% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Confidentiality
None
Integrity
None
Availability
P
Published: January 28, 2012 (5221 days ago)
Last Modified: April 29, 2026
Vendor: Apache
Source: NVD

Description

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.

CWE

CWE-20

Affected Products

apache http server

References

🔗 h20000.www2.hp.com 🔗 httpd.apache.org 🔗 lists.apple.com 🔗 marc.info 🔗 marc.info