Vulnerability Details : 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 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.
Published 2011-11-08 11:55:06
Updated 2012-07-03 04:04:32
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Memory CorruptionInput validationDenial of service

Products affected by CVE-2011-4415

Threat overview for CVE-2011-4415

Top countries where our scanners detected CVE-2011-4415
Top open port discovered on systems with this issue 80
IPs affected by CVE-2011-4415 826,153
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2011-4415!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2011-4415

EPSS FAQ
0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2011-4415

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
1.2
 LOW AV:L/AC:H/Au:N/C:N/I:N/A:P
1.9
2.9
 NIST

CWE ids for CVE-2011-4415

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2011-4415

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