CVE-2020-15703
There is no input validation on the Locale property in an apt transaction.
Does this matter?
Lower severity and a low EPSS score (0.49%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 3.3 LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 0.49% probability · 42th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- aptdaemon project/aptdaemon
- Source
- security@ubuntu.com
EPSS 0.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://ubuntu.com/security/notices/USN-4537-1Patch, Third Party Advisory
- https://www.eyecontrol.nl/blog/the-story-of-3-cves-in-ubuntu-desktop.htmlExploit, Third Party Advisory
- https://ubuntu.com/security/notices/USN-4537-1Patch, Third Party Advisory
- https://www.eyecontrol.nl/blog/the-story-of-3-cves-in-ubuntu-desktop.htmlExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.