CVE-2019-9518

Description

Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.

Weakness classification

• CWE-400: Uncontrolled Resource Consumption
• CWE-770: Allocation of Resources Without Limits or Throttling

Primary references

• cret@cert.org — Mailing List, Third Party Advisory
• cret@cert.org — Mailing List, Third Party Advisory
• cret@cert.org — Mailing List, Third Party Advisory
• cret@cert.org — Third Party Advisory
• cret@cert.org — Third Party Advisory
• cret@cert.org — Third Party Advisory
• cret@cert.org — Third Party Advisory
• cret@cert.org — Third Party Advisory
• cret@cert.org — Third Party Advisory
• cret@cert.org — Third Party Advisory
• cret@cert.org — Third Party Advisory, US Government Resource
• cret@cert.org — Third Party Advisory