CVE-2016-9951

Publication date 14 December 2016

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

From the Ubuntu Security Team

Donncha O Cearbhaill discovered that Apport would offer to restart an application based on the contents of the RespawnCommand or ProcCmdline fields in a crash file. An attacker could use this to convince a user to open a maliciously crafted crash file and execute arbitrary code with the privileges of that user.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
apport	17.04 zesty	Not affected
	16.10 yakkety	Fixed 2.20.3-0ubuntu8.2
	16.04 LTS xenial	Fixed 2.20.1-0ubuntu2.4
	14.04 LTS trusty	Fixed 2.14.1-0ubuntu3.23
	12.04 LTS precise	Fixed 2.0.1-0ubuntu17.15

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3157-1
Apport vulnerabilities
14 December 2016