There is no input validation on the Locale property in an apt transaction. An unprivileged user can supply a full path to a writable directory, which lets aptd read a file as root. Having a symlink in place results in an error message if the file exists, and no error otherwise. This way an unprivileged user can check for the existence of any files on the system as root.
References
Link | Resource |
---|---|
https://ubuntu.com/security/notices/USN-4537-1 | Patch Third Party Advisory |
https://www.eyecontrol.nl/blog/the-story-of-3-cves-in-ubuntu-desktop.html | Exploit Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: canonical
Published: 2020-09-24T00:00:00
Updated: 2020-10-31T03:45:19
Reserved: 2020-07-14T00:00:00
Link: CVE-2020-15703
JSON object: View
NVD Information
Status : Analyzed
Published: 2020-10-31T04:15:10.897
Modified: 2020-11-17T18:37:11.557
Link: CVE-2020-15703
JSON object: View
Redhat Information
No data.
CWE