GHSA-pj4x-2xr5-w87m Possible image tampering from missing image validation for Packages

• Go github.com/crossplane/crossplane: < 1.11.5 → fixed in 1.11.5 • Go github.com/crossplane/crossplane: >= 1.12.0, < 1.12.3 → fixed in 1.12.3

Impact Crossplanes image backend does not validate the byte contents of Crossplane packages. As such, Crossplane does not detect if an attacker has tampered with a Package. Patches The problem has been fixed in 1.11.5, 1.12.3 and 1.13.0, all the supported versions of Crossplane at the time of writing. Workarounds Only using images from trusted sources and keeping Package editing/creating privileges to administrators only, which should be both considered already best practices. References See `ADA-XP-23-11` in the Security Audit's report. Credits This was reported as `ADA-XP-23-11` by @AdamKorcz and @DavidKorczynski from Ada Logic and facilitated by OSTIF as part of the Security Audit sponsored by CNCF.