CVE-2018-11763
Published: 25 September 2018
In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.
Priority
Medium
CVSS 3 base score: 5.9
Status
| Package | Release | Status |
|---|---|---|
|
apache2 Launchpad, Ubuntu, Debian |
Upstream |
Released
(2.4.35)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(2.4.29-1ubuntu4.4)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Not vulnerable
(code not built)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Not vulnerable
(code not present)
|
|
|
Patches: Upstream: https://svn.apache.org/viewvc?view=revision&revision=1840757 (2.4.x) Upstream: https://github.com/apache/httpd/commit/484aba5048e3457dc1d15189f1910d007b1a4a76 |
||
Notes
| Author | Note |
|---|---|
| mdeslaur | artful and older don't enable http2 in the build. see CVE-2018-1302 for a whole http2 backport requirement |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11763
- http://www.securitytracker.com/id/1041713
- https://httpd.apache.org/security/vulnerabilities_24.html
- https://ubuntu.com/security/notices/USN-3783-1
- NVD
- Launchpad
- Debian