CVE-2019-9517

Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.

Score
CVSS 3.1 7.5 High
Status
Modified - cret@cert.org
Published
2019-08-13
Last modified
2024-08-04
Weaknesses
CWE-400, CWE-770

Affected products

References

 
 
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