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AUSCERT External Security Bulletin Redistribution
nginx security advisory (HTTP/2 DoSes)
15 August 2019
AusCERT Security Bulletin Summary
Operating System: UNIX variants (UNIX, Linux, OSX)
Impact/Access: Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2019-9516 CVE-2019-9513 CVE-2019-9511
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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.
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