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CVE-2011-4415

N/A
Published: November 8, 2011 at 11:00 AM UTC
Updated: June 16, 2026 at 11:34 PM UTC
1 product affected across 1 vendorHTTP Server

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Severity
N/A
Exploit prediction
EPSS 3%

Description

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.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Vendor Advisoryx_refsource_HP
Source: [email protected]
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
x_refsource_CONFIRM
Source: [email protected]
http://www.gossamer-threads.com/lists/apache/dev/403775
x_refsource_MISCExploitPatch
Source: [email protected]
http://www.halfdog.net/Security/2011/ApacheModSetEnvIfIntegerOverflow/
x_refsource_MISCExploit
Source: [email protected]
http://www.halfdog.net/Security/2011/ApacheModSetEnvIfIntegerOverflow/DemoExploit.html

CVSS

1.2LOW[email protected]
Confidentiality
NONE
Integrity
NONE
Availability
PARTIAL
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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