CVE-2019-10081

Publication date 15 August 2019

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

HTTP/2 (2.4.20 through 2.4.39) very early pushes, for example configured with "H2PushResource", could lead to an overwrite of memory in the pushing request's pool, leading to crashes. The memory copied is that of the configured push link header values, not data supplied by the client.

Read the notes from the security team

Mitigation

Unpatched servers can disable HTTP/2 push with the "H2Push off" directive.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
apache2	19.04 disco	Fixed 2.4.38-2ubuntu2.2
	18.04 LTS bionic	Fixed 2.4.29-1ubuntu4.10
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Notes

sbeattie

apache 2.4.20 and newer apache 2.4.18 does not build mod_http2.

Severity score breakdown

Parameter	Value
Base score	7.5 · High
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

Related Ubuntu Security Notices (USN)

USN-4113-1
Apache HTTP Server vulnerabilities
29 August 2019