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CVE PROGRAM SOURCE RECORD4.0 Medium

CVE-2020-15703

aptdaemon allows unprivileged users to test for the presence of local files via the transaction Locale property

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Status
Published
Published
Updated
Assigning organization
canonical

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Canonical aptdaemon

  • unspecified to < 1.1.1+bzr982-0ubuntu32.2affected
  • unspecified to < 1.1.1+bzr982-0ubuntu19.4affected
  • unspecified to < 1.1.1+bzr982-0ubuntu14.4affected

References