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CVE-2017-9789

Published: 13 July 2017

When under stress, closing many connections, the HTTP/2 handling code in Apache httpd 2.4.26 would sometimes access memory after it has been freed, resulting in potentially erratic behaviour.

Notes

AuthorNote
sbeattie 
HTTP/2 support has not been enabled in Ubuntu builds of apache

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
apache2
Launchpad, Ubuntu, Debian 		trusty Not vulnerable
(HTTP/2 disabled)
upstream
Released (2.4.27)
xenial Not vulnerable
(HTTP/2 disabled)
yakkety Not vulnerable
(HTTP/2 disabled)
zesty Not vulnerable
(HTTP/2 disabled)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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