Executive Summary

Informations
NameCVE-2011-4415First vendor Publication2011-11-08
VendorCveLast vendor Modification2012-07-03

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:H/Au:N/C:N/I:N/A:P)
Cvss Base Score1.2Attack RangeLocal
Cvss Impact Score2.9Attack ComplexityHigh
Cvss Expoit Score1.9AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores

Detail

The ap_pregsub function in server/util.c in the Apache HTTP Server 2.0.x through 2.0.64 and 2.2.x through 2.2.21, when the mod_setenvif module is enabled, does not restrict the size of values of environment variables, which allows local users to cause a denial of service (memory consumption or NULL pointer dereference) via a .htaccess file with a crafted SetEnvIf directive, in conjunction with a crafted HTTP request header, related to (1) the "len +=" statement and (2) the apr_pcalloc function call, a different vulnerability than CVE-2011-3607.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4415

CWE : Common Weakness Enumeration

%idName
100 %CWE-20Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Application55

OpenVAS Exploits

DateDescription
2011-11-15Name : Apache HTTP Server 'ap_pregsub()' Function Local Denial of Service Vulnerability
File : nvt/gb_apache_50639.nasl

Open Source Vulnerability Database (OSVDB)

idDescription
77012Apache HTTP Server server/utils.c ap_pregsub() Function htaccess File Handlin...

Nessus® Vulnerability Scanner

DateDescription
2012-07-05Name : The remote web server is affected by multiple vulnerabilities.
File : hpsmh_7_1_1_1.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

SourceUrl
CONFIRM http://www.gossamer-threads.com/lists/apache/dev/403775
HP http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
MISC http://www.halfdog.net/Security/2011/ApacheModSetEnvIfIntegerOverflow/
http://www.halfdog.net/Security/2011/ApacheModSetEnvIfIntegerOverflow/DemoExp...

Alert History

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DateInformations
2016-04-26 21:14:21
  • Multiple Updates
2014-02-17 11:06:18
  • Multiple Updates
2013-05-10 23:10:53
  • Multiple Updates