National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-9951 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H (V3.0 legend)
Impact Score: 3.6
Exploitability Score: 2.8


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/95011 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-3157-1
https://bugs.launchpad.net/apport/+bug/1648806 Issue Tracking Patch
https://donncha.is/2016/12/compromising-ubuntu-desktop/ Exploit Technical Description Third Party Advisory
https://github.com/DonnchaC/ubuntu-apport-exploitation Issue Tracking Third Party Advisory
https://www.exploit-db.com/exploits/40937/

Technical Details

Vulnerability Type (View All)

  • Improper Access Control (CWE-284)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:apport_project:apport:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.20.3


Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-9951
NVD Published Date:
12/16/2016
NVD Last Modified:
01/06/2017