A flaw was found in GLib. The D-Bus client-side implementation of the DBUS_COOKIE_SHA1 SASL authentication mechanism does not validate the cookie_context parameter received from the server. A malicious D-Bus server can supply a cookie_context containing path traversal sequences, causing the client to read an arbitrary file and exfiltrate sensitive data by verifying guessed file contents against a generated hash.
2.72.4-0ubuntu2.102.80.0-6ubuntu3.92.84.1-12.84.1-22.84.2-12.84.3-12.85.1-22.85.2-22.85.3-12.86.0-22.86.0-2ubuntu0.12.86.0-2ubuntu0.2+1 more2.88.0-1ubuntu0.12.40.2-0ubuntu1.1+esm82.48.2-0ubuntu4.8+esm62.56.4-0ubuntu0.18.04.9+esm62.64.6-1~ubuntu20.04.9+esm2Exploitability
AV:NAC:HPR:NUI:NScope
S:UImpact
C:HI:NA:NCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N