==========================================================================
Ubuntu Security Notice USN-7035-1
September 25, 2024

apparmor vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

AppArmor restrictions could be bypassed for rules allowing mount
operations

Software Description:
- apparmor: Linux security system

Details:

It was discovered that the AppArmor policy compiler incorrectly generated
looser restrictions than expected for rules allowing mount operations. A
local attacker could possibly use this to bypass AppArmor restrictions in
applications where some mount operations were permitted.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS
   apparmor                        3.0.4-2ubuntu2.4

Ubuntu 20.04 LTS
   apparmor                        2.13.3-7ubuntu5.4

In general, a standard system update will make all the necessary changes.
After this update, applications confined by policies with mount operations
restrictions may need to have the rules updated.

References:
   https://ubuntu.com/security/notices/USN-7035-1
   https://bugs.launchpad.net/apparmor/+bug/1597017
   CVE-2016-1585

Package Information:
   https://launchpad.net/ubuntu/+source/apparmor/3.0.4-2ubuntu2.4
   https://launchpad.net/ubuntu/+source/apparmor/2.13.3-7ubuntu5.4

Ubuntu 7035-1: AppArmor Security Advisory Updates

September 25, 2024
AppArmor restrictions could be bypassed for rules allowing mount operations

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: AppArmor restrictions could be bypassed for rules allowing mount operations Software Description: - apparmor: Linux security system Details: It was discovered that the AppArmor policy compiler incorrectly generated looser restrictions than expected for rules allowing mount operations. A local attacker could possibly use this to bypass AppArmor restrictions in applications where some mount operations were permitted.

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS apparmor 3.0.4-2ubuntu2.4 Ubuntu 20.04 LTS apparmor 2.13.3-7ubuntu5.4 In general, a standard system update will make all the necessary changes. After this update, applications confined by policies with mount operations restrictions may need to have the rules updated.

References

https://ubuntu.com/security/notices/USN-7035-1

https://bugs.launchpad.net/apparmor/+bug/1597017

CVE-2016-1585

Severity
Ubuntu Security Notice USN-7035-1

Package Information

https://launchpad.net/ubuntu/+source/apparmor/3.0.4-2ubuntu2.4 https://launchpad.net/ubuntu/+source/apparmor/2.13.3-7ubuntu5.4

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