Headline
GHSA-pj4x-2xr5-w87m: Possible image tampering from missing image validation for Packages
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.
Package
gomod github.com/crossplane/crossplane (Go)
Affected versions
< 1.11.5
>= 1.12.0, < 1.12.3
Patched versions
1.11.5
1.12.3
Description
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.
References
- GHSA-pj4x-2xr5-w87m
- https://nvd.nist.gov/vuln/detail/CVE-2023-38495
- https://github.com/crossplane/crossplane/blob/ac8b24fe739c5d942ea885157148497f196c3dd3/security/ADA-security-audit-23.pdf
phisco published to crossplane/crossplane
Jul 27, 2023
Published to the GitHub Advisory Database
Jul 28, 2023
Reviewed
Jul 28, 2023
Last updated
Jul 28, 2023