Vulnerability Details : CVE-2016-9950
Potential exploit
An issue was discovered in Apport before 2.20.4. There is a path traversal issue in the Apport crash file "Package" and "SourcePackage" fields. These fields are used to build a path to the package specific hook files in the /usr/share/apport/package-hooks/ directory. An attacker can exploit this path traversal to execute arbitrary Python files from the local system.
Vulnerability category: Directory traversal
Products affected by CVE-2016-9950
- cpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
- cpe:2.3:a:apport_project:apport:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-9950
2.36%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 83 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-9950
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
9.3
|
HIGH | AV:N/AC:M/Au:N/C:C/I:C/A:C |
8.6
|
10.0
|
NIST | |
7.8
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2016-9950
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The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-9950
-
http://www.ubuntu.com/usn/USN-3157-1
USN-3157-1: Apport vulnerabilities | Ubuntu security notices
-
https://www.exploit-db.com/exploits/40937/
Apport 2.x (Ubuntu Desktop 12.10 < 16.04) - Local Code Execution
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https://bugs.launchpad.net/apport/+bug/1648806
Bug #1648806 “Arbitrary code execution through crafted CrashDB o...” : Bugs : ApportIssue Tracking;Patch
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http://www.securityfocus.com/bid/95011
Apport Multiple Security VulnerabilitiesThird Party Advisory;VDB Entry
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https://donncha.is/2016/12/compromising-ubuntu-desktop/
Reliably compromising Ubuntu desktops by attacking the crash reporter | Donncha O'CearbhaillExploit;Technical Description;Third Party Advisory
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https://github.com/DonnchaC/ubuntu-apport-exploitation
GitHub - DonnchaC/ubuntu-apport-exploitation: This project contains a PoC and exploit generator for a code execution bug in Ubuntu's Apport crash reporterIssue Tracking;Third Party Advisory
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