Relax-and-Recover (aka ReaR) through 2.7 creates a world-readable initrd when using GRUB_RESCUE=y. This allows local attackers to gain access to system secrets otherwise only readable by root.
{ "binaries": [ { "binary_version": "2.3+dfsg-1", "binary_name": "rear" } ] }
{ "binaries": [ { "binary_version": "2.5+dfsg-1", "binary_name": "rear" } ] }
{ "binaries": [ { "binary_version": "2.6+dfsg-1", "binary_name": "rear" } ] }
{ "binaries": [ { "binary_version": "2.7+dfsg-1.1", "binary_name": "rear" } ] }
{ "binaries": [ { "binary_version": "2.7+dfsg-1.2", "binary_name": "rear" } ] }