Bug 1390526 (CVE-2016-0762) - CVE-2016-0762 tomcat: timing attack in Realm implementation
Summary: CVE-2016-0762 tomcat: timing attack in Realm implementation
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2016-0762
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1390531 1390532 1390533 1393227 1393228
Blocks: 1376651 1390534 1415638 1428325
TreeView+ depends on / blocked
 
Reported: 2016-11-01 10:05 UTC by Martin Prpič
Modified: 2021-10-27 10:53 UTC (History)
63 users (show)

Fixed In Version: tomcat 6.0.47, tomcat 7.0.72, tomcat 8.5.5, tomcat 8.0.37
Doc Type: If docs needed, set a value
Doc Text:
The Realm implementations did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note that the default configuration includes the LockOutRealm which makes exploitation of this vulnerability harder.
Clone Of:
Environment:
Last Closed: 2021-10-27 10:53:04 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:0455 0 normal SHIPPED_LIVE Important: Red Hat JBoss Web Server 3.1.0 security and enhancement update 2017-03-08 00:06:40 UTC
Red Hat Product Errata RHSA-2017:0456 0 normal SHIPPED_LIVE Important: Red Hat JBoss Web Server 3.1.0 security and enhancement update 2017-03-08 00:06:06 UTC
Red Hat Product Errata RHSA-2017:0457 0 normal SHIPPED_LIVE Important: Red Hat JBoss Web Server security and enhancement update 2017-03-08 00:05:59 UTC
Red Hat Product Errata RHSA-2017:2247 0 normal SHIPPED_LIVE Low: tomcat security, bug fix, and enhancement update 2017-08-01 19:43:19 UTC

Description Martin Prpič 2016-11-01 10:05:46 UTC 
The following flaw was found in Tomcat:

The Realm implementations did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note that the default configuration includes the LockOutRealm which makes exploitation of this vulnerability harder.

Upstream patches:

6.0.47: https://svn.apache.org/viewvc?view=revision&revision=1758506
7.0.72: https://svn.apache.org/viewvc?view=revision&revision=1758502
8.5.5: https://svn.apache.org/viewvc?view=revision&revision=1758500
8.0.37: https://svn.apache.org/viewvc?view=revision&revision=1758501

External References:

https://tomcat.apache.org/security-6.html#Fixed_in_Apache_Tomcat_6.0.47
https://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.72
https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.5_and_8.0.37
Comment 2 Martin Prpič 2016-11-01 10:25:06 UTC 
Created tomcat tracking bugs for this issue:

Affects: fedora-all [bug 1390532]
Affects: epel-6 [bug 1390533]
Comment 6 errata-xmlrpc 2017-03-07 19:09:57 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Web Server 3.1.0

Via RHSA-2017:0457 https://rhn.redhat.com/errata/RHSA-2017-0457.html
Comment 7 errata-xmlrpc 2017-03-07 19:14:30 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Web Server 3 for RHEL 7

Via RHSA-2017:0456 https://access.redhat.com/errata/RHSA-2017:0456
Comment 8 errata-xmlrpc 2017-03-07 19:19:02 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Web Server 3 for RHEL 6

Via RHSA-2017:0455 https://access.redhat.com/errata/RHSA-2017:0455
Comment 9 errata-xmlrpc 2017-08-01 23:20:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:2247 https://access.redhat.com/errata/RHSA-2017:2247
Comment 10 Joshua Padman 2019-05-16 03:44:55 UTC 
This vulnerability is out of security support scope for the following product:
 * Red Hat JBoss Operations Network 3
 * Red Hat JBoss Data Grid 6
 * Red Hat JBoss BRMS 5
 * Red Hat JBoss Data Virtualization & Services 6
 * Red Hat JBoss Fuse Service Works 6

Please refer to https://access.redhat.com/support/policy/updates/jboss_notes for more details.
Note You need to log in before you can comment on or make changes to this bug.