CVE-2023-38495: Crossplane vulnerable to possible image tampering from missing image validation for Packages
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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Reference Links
- https://github.com/crossplane/crossplane/blob/ac8b24fe739c5d942ea885157148497f196c3dd3/security/ADA-security-audit-23.pdf
- https://github.com/crossplane/crossplane/security/advisories/GHSA-pj4x-2xr5-w87m
- https://nvd.nist.gov/vuln/detail/CVE-2023-38495
- https://github.com/advisories/GHSA-pj4x-2xr5-w87m (Advisory)
Frequently Asked Questions
What is the severity of CVE-2023-38495?
The severity of CVE-2023-38495 is critical (9.8/10).
How does CVE-2023-38495 impact Crossplane?
CVE-2023-38495 allows an attacker to tamper with Crossplane packages, compromising the security and integrity of the system.
Which versions of Crossplane are affected by CVE-2023-38495?
Crossplane versions up to 1.11.5 and versions between 1.12.0 and 1.12.3 are affected by CVE-2023-38495.
How can I patch CVE-2023-38495?
CVE-2023-38495 has been fixed in Crossplane versions 1.11.5, 1.12.3, and 1.13.0.
Where can I find more information about CVE-2023-38495?
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).
- collector/github-advisory-latest
- alias/GHSA-pj4x-2xr5-w87m
- alias/CVE-2023-38495
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