Signature Detail
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Short Name |
HTTP:APACHE:MOD-HTTP2-DOS |
|---|---|
Severity |
Major |
Recommended |
Yes |
Recommended Action |
Drop |
Category |
HTTP |
Keywords |
Apache HTTP Server mod_http2 Module Denial of Service |
Release Date |
2017/02/02 |
Update Number |
2826 |
Supported Platforms |
idp-4.0+, isg-3.0+, j-series-9.5+, mx-11.4+, srx-12.1+, srx-branch-12.1+, vmx-17.4+, vsrx-12.1+, vsrx3bsd-18.2+ |
HTTP: Apache HTTP Server mod_http2 Module Denial of Service
This signature detects attempts to exploit a known vulnerability in the Apache HTTP server. Successful exploitation would use up all the available memory on the server, resulting in a denial of service condition on the target.
Extended Description
The mod_http2 module in the Apache HTTP Server 2.4.17 through 2.4.23, when the Protocols configuration includes h2 or h2c, does not restrict request-header length, which allows remote attackers to cause a denial of service (memory consumption) via crafted CONTINUATION frames in an HTTP/2 request.
Affected Products
- Apache http_server 2.4.17
- Apache http_server 2.4.18
- Apache http_server 2.4.19
- Apache http_server 2.4.20
- Apache http_server 2.4.21
- Apache http_server 2.4.22
- Apache http_server 2.4.23
References
- BugTraq: 94650
- CVE: CVE-2016-8740