CVE-2011-4415

CVE-2011-4415

Published · Updated

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23Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendepss 3.0%
from disclosure to weaponsame day
Published on NVDNov 8
1st PoCNov 2
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.
Affected products
n/a · n/a
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