CVE-2017-9788

Published: 13 July 2017

In Apache httpd before 2.2.34 and 2.4.x before 2.4.27, the value placeholder in [Proxy-]Authorization headers of type 'Digest' was not initialized or reset before or between successive key=value assignments by mod_auth_digest. Providing an initial key with no '=' assignment could reflect the stale value of uninitialized pool memory used by the prior request, leading to leakage of potentially confidential information, and a segfault in other cases resulting in denial of service.

Priority

Cvss 3 Severity Score

9.1

Score breakdown

Status

Package	Release	Status
apache2 Launchpad, Ubuntu, Debian	trusty	Released (2.4.7-1ubuntu4.17)
	upstream	Released (2.4.27)
	xenial	Released (2.4.18-2ubuntu3.4)
	yakkety	Ignored (end of life)
	zesty	Released (2.4.25-3ubuntu2.2)
	Patches: upstream: https://github.com/apache/httpd/commit/549ba6a39aa0df78a610025f74f3a06503a70f67 upstream: https://svn.apache.org/viewvc?view=revision&revision=1800955

Severity score breakdown

Parameter	Value
Base score	9.1
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

References

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