First published: Thu Jul 27 2023(Updated: )
### 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](https://github.com/crossplane/crossplane/blob/ac8b24fe739c5d942ea885157148497f196c3dd3/security/ADA-security-audit-23.pdf). ### 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.
Credit: security-advisories@github.com security-advisories@github.com
Affected Software | Affected Version | How to fix |
---|---|---|
Cncf Crossplane | <1.11.5 | |
Cncf Crossplane | >=1.12.0<1.12.3 | |
go/github.com/crossplane/crossplane | >=1.12.0<1.12.3 | 1.12.3 |
go/github.com/crossplane/crossplane | <1.11.5 | 1.11.5 |
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The severity of CVE-2023-38495 is critical (9.8/10).
CVE-2023-38495 allows an attacker to tamper with Crossplane packages, compromising the security and integrity of the system.
Crossplane versions up to 1.11.5 and versions between 1.12.0 and 1.12.3 are affected by CVE-2023-38495.
CVE-2023-38495 has been fixed in Crossplane versions 1.11.5, 1.12.3, and 1.13.0.
You can find more information about CVE-2023-38495 in the following references: [GitHub Advisory](https://github.com/crossplane/crossplane/security/advisories/GHSA-pj4x-2xr5-w87m), [NVD](https://nvd.nist.gov/vuln/detail/CVE-2023-38495).