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Posted to announce@httpd.apache.org by Daniel Ruggeri <dr...@apache.org> on 2020/08/07 11:31:37 UTC

CVE-2020-9490: 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