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CVE-2019-9518 PUBLISHED

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.

EPSS 4.70% · 89.3th percentile

Risk Scores

EPSS Score
4.70%
89.3th percentile

Affected Products

VendorProductVersions
Ubuntu:18.04:LTStrafficserver7.1.2+ds-3, 0, 7.0.0-5
Ubuntu:Pro:18.04:LTSnetty1:4.1.7-4, 1:4.1.7-4ubuntu0.1~esm1, 1:4.1.7-4ubuntu0.1

Timeline

References

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