CVE-2016-9951 Information

Description

An issue was discovered in Apport before 2.20.4. A malicious Apport crash file can contain a restart command in RespawnCommand or ProcCmdline fields. This command will be executed if a user clicks the Relaunch button on the Apport prompt from the malicious crash file. The fix is to only show the Relaunch button on Apport crash files generated by local systems. The Relaunch button will be hidden when crash files are opened directly in Apport-GTK.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Reference

http://www.securityfocus.com/bid/95011 http://www.ubuntu.com/usn/USN-3157-1 https://bugs.launchpad.net/apport/+bug/1648806 https://donncha.is/2016/12/compromising-ubuntu-desktop/ https://github.com/DonnchaC/ubuntu-apport-exploitation https://www.exploit-db.com/exploits/40937/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5