CVE-2019-9515

Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, 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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