CVE-2011-4415

LowCVSS 1.2/10Last modified Jun 16, 2026

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.

Metrics

CVSS 2.0 1.2/10AV:L/AC:H/Au:N/C:N/I:N/A:P

Weakness enumeration

CWE-20

Affected software

No affected versions have been published.

Timeline

Published: Nov 8, 2011
Last modified: Jun 16, 2026
NVD status: Modified

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