CVE-2016-4979
Last modified
CVE-2016-4979 is a vulnerability of currently unknown severity. The Apache HTTP Server 2.4.18 through 2.4.20, when mod_http2 and mod_ssl are enabled, does not properly recognize the "SSLVerifyClient require" directive for HTTP/2 request authorization, which allows remote attackers to bypass intended access restrictions by leveraging the ability to send multiple requests over a single connection and aborting a renegotiation.. EPSS estimates a 18.80% chance of exploitation in the next 30 days.
Description
The Apache HTTP Server 2.4.18 through 2.4.20, when mod_http2 and mod_ssl are enabled, does not properly recognize the "SSLVerifyClient require" directive for HTTP/2 request authorization, which allows remote attackers to bypass intended access restrictions by leveraging the ability to send multiple requests over a single connection and aborting a renegotiation.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apache | Http Server | 2.4.18 |
| Apache | Http Server | 2.4.19 |
| Apache | Http Server | 2.4.20 |
References
- http://httpd.apache.org/security/vulnerabilities_24.htmlPatch, Vendor Advisory
- http://httpd.apache.org/security/vulnerabilities_24.htmlPatch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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