Allocation of Resources Without Limits or Throttling Affecting trafficserver package, versions <8.0.5+ds-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
25.45% (98th percentile)

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  • Snyk IDSNYK-ECHOLATEST-TRAFFICSERVER-18001121
  • published17 Jul 2026
  • disclosed13 Aug 2019

Introduced: 13 Aug 2019

CVE-2019-9518  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Echo:latest trafficserver to version 8.0.5+ds-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream trafficserver package and not the trafficserver package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

References

CVSS Base Scores

version 3.1