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AUSCERT External Security Bulletin Redistribution
ESB-2019.1150.2
USN-3937-1: Apache HTTP Server vulnerabilities
11 April 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: apache
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Root Compromise -- Existing Account
Access Privileged Data -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-0220 CVE-2019-0217 CVE-2019-0211
CVE-2019-0196 CVE-2018-17199 CVE-2018-17189
CVE-2018-1312 CVE-2018-1301 CVE-2017-15710
Reference: ESB-2019.1129
Original Bulletin:
https://usn.ubuntu.com/3937-1/
https://usn.ubuntu.com/3937-2/
Comment: This bulletin contains two (2) Ubuntu security advisories.
Revision History: April 11 2019: This update provides the corresponding
update for Ubuntu 12.04 ESM.
April 5 2019: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
USN-3937-1: Apache HTTP Server vulnerabilities
4 April 2019
apache2 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 18.10
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
o Ubuntu 14.04 LTS
Summary
Several security issues were fixed in the Apache HTTP Server.
Software Description
o apache2 - Apache HTTP server
Details
Charles Fol discovered that the Apache HTTP Server incorrectly handled the
scoreboard shared memory area. A remote attacker able to upload and run scripts
could possibly use this issue to execute arbitrary code with root privileges.
(CVE-2019-0211)
It was 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. This issue only
affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-17189)
It was discovered that the Apache HTTP Server incorrectly handled session
expiry times. When used with mod_session_cookie, this may result in the session
expiry time to be ignored, contrary to expectations. (CVE-2018-17199)
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 process requests incorrectly. This issue only affected
Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2019-0196)
Simon Kappel discovered that the Apache HTTP Server mod_auth_digest module
incorrectly handled threads. A remote attacker with valid credentials could
possibly use this issue to authenticate using another username, bypassing
access control restrictions. (CVE-2019-0217)
Bernhard Lorenz discovered that the Apache HTTP Server was inconsistent when
processing requests containing multiple consecutive slashes. This could lead to
directives such as LocationMatch and RewriteRule to perform contrary to
expectations. (CVE-2019-0220)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 18.10
apache2-bin - 2.4.34-1ubuntu2.1
Ubuntu 18.04 LTS
apache2-bin - 2.4.29-1ubuntu4.6
Ubuntu 16.04 LTS
apache2-bin - 2.4.18-2ubuntu3.10
Ubuntu 14.04 LTS
apache2-bin - 2.4.7-1ubuntu4.22
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
In general, a standard system update will make all the necessary changes.
References
o CVE-2018-17189
o CVE-2018-17199
o CVE-2019-0196
o CVE-2019-0211
o CVE-2019-0217
o CVE-2019-0220
================================================================================
==========================================================================
Ubuntu Security Notice USN-3937-2
April 10, 2019
apache2 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 12.04 ESM
Summary:
Several security issues were fixed in Apache.
Software Description:
- - apache2: Apache HTTP server
Details:
USN-3937-1 and USN-3627-1 fixed several vulnerabilities in Apache.
This update provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
 Simon Kappel discovered that the Apache HTTP Server mod_auth_digest
 module incorrectly handled threads. A remote attacker with valid
 credentials could possibly use this issue to authenticate using
 another username, bypassing access control restrictions. Â
 (CVE-2019-0217)
 Alex Nichols and Jakob Hirsch discovered that the Apache HTTP Server
 mod_authnz_ldap module incorrectly handled missing charset encoding
 headers. A remote attacker could possibly use this issue to cause the
 server to crash, resulting in a denial of service. (CVE-2017-15710)
 Robert Swiecki discovered that the Apache HTTP Server incorrectly
 handled certain requests. A remote attacker could possibly use this
 issue to cause the server to crash, leading to a denial of service.
 (CVE-2018-1301)
 Nicolas Daniels discovered that the Apache HTTP Server incorrectly
 generated the nonce when creating HTTP Digest authentication
 challenges. A remote attacker could possibly use this issue to replay
 HTTP requests across a cluster of servers.
 (CVE-2018-1312)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 ESM:
 apache2.2-bin                    2.2.22-1ubuntu1.15
In general, a standard system update will make all the necessary
changes.
References:
 https://usn.ubuntu.com/usn/usn-3937-2
 https://usn.ubuntu.com/usn/usn-3937-1
 CVE-2017-15710, CVE-2018-1301, CVE-2018-1312, CVE-2019-0217
- --------------------------END INCLUDED TEXT--------------------
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