CVE-2016-0714

The session-persistence implementation in Apache Tomcat 6.x before 6.0.45, 7.x before 7.0.68, 8.x before 8.0.31, and 9.x before 9.0.0.M2 mishandles session attributes, which allows remote authenticated users to bypass intended SecurityManager restrictions and execute arbitrary code in a privileged context via a web application that places a crafted object in a session.

From the Ubuntu Security Team

It was discovered that the Tomcat session-persistence implementation incorrectly handled session attributes. A remote attacker could possibly use this issue to execute arbitrary code in a privileged context.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
tomcat6	18.04 LTS bionic	Not in release
	17.10 artful	Not in release
	17.04 zesty	Not in release
	16.10 yakkety	Not in release
	16.04 LTS xenial	Fixed 6.0.45+dfsg-1
	15.10 wily	Ignored end of life
	14.04 LTS trusty	Fixed 6.0.39-1ubuntu0.1
	12.04 LTS precise	Fixed 6.0.35-1ubuntu3.7
tomcat7	18.04 LTS bionic	Not affected
	17.10 artful	Not affected
	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	15.10 wily	Fixed 7.0.64-1ubuntu0.3
	14.04 LTS trusty	Fixed 7.0.52-1ubuntu0.6
	12.04 LTS precise	Ignored end of life
tomcat8	18.04 LTS bionic	Not affected
	17.10 artful	Not affected
	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	15.10 wily	Ignored end of life
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release

Notes

mdeslaur

list of backports is incomplete. Fix is intrusive.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
tomcat6	Upstream: http://svn.apache.org/viewvc?view=revision&revision=1727166 Upstream: http://svn.apache.org/viewvc?view=revision&revision=1727182
tomcat7	Upstream: http://svn.apache.org/viewvc?view=revision&revision=1726813 Upstream: http://svn.apache.org/viewvc?view=revision&revision=1726817 Upstream: http://svn.apache.org/viewvc?view=revision&revision=1726818 Upstream: http://svn.apache.org/viewvc?view=revision&revision=1726819 Upstream: http://svn.apache.org/viewvc?view=revision&revision=1726917 Upstream: http://svn.apache.org/viewvc?view=revision&revision=1726922 Upstream: http://svn.apache.org/viewvc?view=revision&revision=1726923 Upstream: http://svn.apache.org/viewvc?view=revision&revision=1727031 Upstream: http://svn.apache.org/viewvc?view=revision&revision=1727034
tomcat8	Upstream: http://svn.apache.org/viewvc?view=revision&revision=1726196 Upstream: http://svn.apache.org/viewvc?view=revision&revision=1726203

Severity score breakdown

Parameter	Value
Base score	8.8 · High
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3024-1
Tomcat vulnerabilities
5 July 2016

Cvss 3 Severity Score