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Date: Fri, 07 Aug 2020 06:31:37 -0500
From: Daniel Ruggeri <druggeri@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2020-9490: Apache httpd: Push Diary Crash on Specifically Crafted HTTP/2 Header


CVE-2020-9490: Push Diary Crash on Specifically Crafted HTTP/2 Header

Severity: important

Vendor: Apache Software Foundation

Versions Affected:
Apache HTTP Server 2.4.20 to 2.4.43

Description:
Apache HTTP Server versions 2.4.20 to 2.4.43
A specially crafted value for the 'Cache-Digest' header in a HTTP/2
request would result in a crash when the server actually tries to HTTP/2
PUSH a resource afterwards.

Configuring the HTTP/2 feature via "H2Push off" will mitigate this vulnerability for unpatched servers.

Mitigation:

Credit:
Felix Wilhelm of Google Project Zero

References:
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-9490

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