CVE-2012-0021

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Summary

CVECVE-2012-0021
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2012-01-28 04:05:00 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v2.0 2.6 from [email protected]

AV:N/AC:H/Au:N/C:N/I:N/A:P

Problem Types: CWE-20 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
High
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:H/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Apache Http Server 2.2.17 All All All
Application Apache Http Server 2.2.18 All All All
Application Apache Http Server 2.2.19 All All All
Application Apache Http Server 2.2.20 All All All
Application Apache Http Server 2.2.21 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Bug 785065 – CVE-2012-0021 httpd: NULL pointer dereference crash in mod_log_config af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Oracle Critical Patch Update - July 2012 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
HPSBMU02786 SSRT100877 rev.2 - HP System Management Homepage (SMH) Running on Linux, Windows, and VMware ESX, Remote Unauthorized Access, Disclosure of Information, Data Modification, Denial of Service (DoS), Execution of Arbitrary Code - c03360041 - HP Business Support Center af854a3a-2127-422b-91ae-364da2661108 h20000.www2.hp.com
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Security Alerts - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
[Apache-SVN] Revision 1227292 af854a3a-2127-422b-91ae-364da2661108 svn.apache.org Patch
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Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
52256 – CVE-2012-0021 Nameless, Valueless cookie causes Segmentation fault when logging Cookies af854a3a-2127-422b-91ae-364da2661108 issues.apache.org Patch
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
'[security bulletin] HPSBMU02748 SSRT100772 rev.1 - HP OpenView Network Node Manager (OV NNM) Running' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info
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access.redhat.com af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com
About the security content of OS X Mountain Lion v10.8.2, OS X Lion v10.7.5 and Security Update 2012-004 af854a3a-2127-422b-91ae-364da2661108 support.apple.com
httpd 2.2 vulnerabilities - The Apache HTTP Server Project af854a3a-2127-422b-91ae-364da2661108 httpd.apache.org Vendor Advisory
Support / Security / Advisories / / MDVSA-2013:150 | Mandriva af854a3a-2127-422b-91ae-364da2661108 www.mandriva.com
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
access.redhat.com af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com
'[security bulletin] HPSBUX02761 SSRT100823 rev.1 - HP-UX Running Apache, Remote Denial of Service (D' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
APPLE-SA-2012-09-19-2 OS X Mountain Lion v10.8.2, OS X Lion v10.7.5 and Security Update 2012-004 af854a3a-2127-422b-91ae-364da2661108 lists.apple.com
mandriva.com af854a3a-2127-422b-91ae-364da2661108 www.mandriva.com
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