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IBM WebSphere Application Server: CVE-2019-9518: Multiple vulnerabilities in HTTP/2 implementation used by WebSphere Application Server Liberty

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IBM WebSphere Application Server: CVE-2019-9518: Multiple vulnerabilities in HTTP/2 implementation used by WebSphere Application Server Liberty

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
08/13/2019
Created
01/03/2020
Added
01/03/2020
Modified
03/13/2020

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.

Solution(s)

  • ibm-was-install-8-5-ph16611-liberty
  • ibm-was-upgrade-8-5-19-0-0-10-liberty

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