nginx: Denial of Service -- Remote/Unauthenticated

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.3116
                  nginx security advisory (HTTP/2 DoSes)
                              15 August 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           nginx
Publisher:         nginx
Operating System:  UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-9516 CVE-2019-9513 CVE-2019-9511

Reference:         ASB-2019.0238
                   ESB-2019.3114

Original Bulletin: 
   http://mailman.nginx.org/pipermail/nginx-announce/2019/000249.html

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Hello!

Several security issues were identified in nginx HTTP/2
implementation, which might cause excessive memory consumption
and CPU usage (CVE-2019-9511, CVE-2019-9513, CVE-2019-9516).

The issues affect nginx compiled with the ngx_http_v2_module (not
compiled by default) if the "http2" option of the "listen" directive
is used in a configuration file.

The issues affect nginx 1.9.5 - 1.17.2.
The issues are fixed in nginx 1.17.3, 1.16.1.

Thanks to Jonathan Looney from Netflix for discovering these issues.


- -- 
Maxim Dounin
http://nginx.org/

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