Path Traversal in Aptdaemon Project
CVE-2020-15703
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.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.005 (39.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Aptdaemon_project Aptdaemon — versions 1.1.1
- Canonical Aptdaemon — versions unspecified
Weakness classification (CWE)
References
- security@ubuntu.com (Exploit, Third Party Advisory, x_refsource_MISC)
- security@ubuntu.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-15703?
- CVE-2020-15703 is a medium-severity vulnerability in Aptdaemon Project, classified under Path Traversal. CVSS score: 4.0/10. Published 2020-10-31.
- How severe is CVE-2020-15703?
- Medium severity. CVSS v3 base score is 4.0 out of 10.