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, does…

published November 8, 2011

CVSS
—
EPSS
3%
Percentile
87.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.03019 · 87.3th percentile
Published
2011-11-08T11:00Z
EPSS history
Timeline
  • 08 NOV 11:00Z
    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…
    cvelistv5