National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2012-0021 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 2.6 LOW
Vector: (AV:N/AC:H/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 4.9


Access Vector (AV): Network
Access Complexity (AC): High
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
http://httpd.apache.org/security/vulnerabilities_22.html Vendor Advisory
http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
http://marc.info/?l=bugtraq&m=133294460209056&w=2
http://marc.info/?l=bugtraq&m=133494237717847&w=2
http://rhn.redhat.com/errata/RHSA-2012-0542.html
http://rhn.redhat.com/errata/RHSA-2012-0543.html
http://support.apple.com/kb/HT5501
http://svn.apache.org/viewvc?view=revision&revision=1227292 Patch
http://www.mandriva.com/security/advisories?name=MDVSA-2012:012
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html
https://bugzilla.redhat.com/show_bug.cgi?id=785065
https://issues.apache.org/bugzilla/show_bug.cgi?id=52256 Patch

Technical Details

Vulnerability Type (View All)

  • Improper Input Validation (CWE-20)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:apache:http_server:2.2.17:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:apache:http_server:2.2.18:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:apache:http_server:2.2.19:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:apache:http_server:2.2.20:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:apache:http_server:2.2.21:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2012-0021
NVD Published Date:
01/27/2012
NVD Last Modified:
01/17/2018