CVE-2020-15703GHSA-WPMR-Q825-X4C6PYSEC-2026-783
aptdaemon allows unprivileged users to test for the presence of local files via the transaction Locale property
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 1.1.1+bzr982-0ubuntu32.2, 1.1.1+bzr982-0ubuntu19.4, 1.1.1+bzr982-0ubuntu14.4, 1.1.1
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Canonical aptdaemon
fixed in 1.1.1+bzr982-0ubuntu32.2; fixed in 1.1.1+bzr982-0ubuntu19.4; fixed in 1.1.1+bzr982-0ubuntu14.4
- aptdaemonPyPI
fixed in 1.1.1