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AUSCERT External Security Bulletin Redistribution
Apache HTTP Server vulnerabilities
4 October 2018
AusCERT Security Bulletin Summary
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2018-11763 CVE-2018-1333 CVE-2018-1302
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USN-3783-1: Apache HTTP Server vulnerabilities
3 October 2018
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 18.04 LTS
Several security issues were fixed in the Apache HTTP Server.
o apache2 - Apache HTTP server
Robert Swiecki discovered that the Apache HTTP Server HTTP/2 module incorrectly
destroyed certain streams. A remote attacker could possibly use this issue to
cause the server to crash, leading to a denial of service. (CVE-2018-1302)
Craig Young discovered that the Apache HTTP Server HTTP/2 module incorrectly
handled certain requests. A remote attacker could possibly use this issue to
cause the server to consume resources, leading to a denial of service.
Gal Goldshtein discovered that the Apache HTTP Server HTTP/2 module incorrectly
handled large SETTINGS frames. A remote attacker could possibly use this issue
to cause the server to consume resources, leading to a denial of service.
The problem can be corrected by updating your system to the following package
Ubuntu 18.04 LTS
apache2-bin - 2.4.29-1ubuntu4.4
To update your system, please follow these instructions: https://
In general, a standard system update will make all the necessary changes.
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