Summary
Nginx is a web server and a reverse proxy server for HTTP, SMTP, POP3 (Post Office Protocol 3) and IMAP protocols, with a focus on high concurrency, performance and low memory usage.
Security Fix(es):
* HTTP/2: large amount of data request leads to denial of service (CVE-2019-9511)
* HTTP/2: flood using PRIORITY frames resulting in excessive resource consumption (CVE-2019-9513)
* HTTP/2: 0-length headers leads to denial of service (CVE-2019-9516)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Rocky Linux · 8 | nginx | 1:1.14.1-9.module+el8.4.0+542+81547229 |
Vulnerabilities 3
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High 7.5
Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service
Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manip…
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High 7.5
Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service
Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority…
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High 7.5CVE-2019-9516 EPSS 57%
Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service
Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. S…