CVE-2011-4415
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,...
- Published
- Nov 8, 2011
- Updated
- Aug 7, 2024
- Assigning CNA
- mitre
- Evidence observed
- Nov 2, 2011
Primary CVSS
nvd · CVSS 2.0
AV:L/AC:H/Au:N/C:N/I:N/A:PLow · next 30 days
- Percentile
- 87.1%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
1halfdog · linux · Nov 2, 2011
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