CVE-2022-23551
In this case, a token request made with backslash in the request (example: `/metadata/identity\oauth2\token/`) would bypass the NMI validation and be sent to IMDS allowing a pod in the cluster to access identities that it shouldn't have access to.
Does this matter?
Lower severity and a low EPSS score (0.71%). Track it; it rarely justifies an emergency change on its own.
Description
aad-pod-identity assigns Azure Active Directory identities to Kubernetes applications and has now been deprecated as of 24 October 2022. The NMI component in AAD Pod Identity intercepts and validates token requests based on regex. In this case, a token request made with backslash in the request (example: `/metadata/identity\oauth2\token/`) would bypass the NMI validation and be sent to IMDS allowing a pod in the cluster to access identities that it shouldn't have access to. This issue has been fixed and has been included in AAD Pod Identity release version 1.8.13. If using the AKS pod-managed identities add-on, no action is required. The clusters should now be running the version 1.8.13 release.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:L
- EPSS
- 0.71% probability · 52th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-863, CWE-1259
- Affected
- microsoft/azure ad pod identity
- Source
- security-advisories@github.com
References
- https://github.com/Azure/aad-pod-identity/commit/7e01970391bde6c360d077066ca17d059204cb5dPatch, Third Party Advisory
- https://github.com/Azure/aad-pod-identity/releases/tag/v1.8.13Third Party Advisory
- https://github.com/Azure/aad-pod-identity/security/advisories/GHSA-p82q-rxpm-hjpcThird Party Advisory
- https://github.com/Azure/aad-pod-identity/commit/7e01970391bde6c360d077066ca17d059204cb5dPatch, Third Party Advisory
- https://github.com/Azure/aad-pod-identity/releases/tag/v1.8.13Third Party Advisory
- https://github.com/Azure/aad-pod-identity/security/advisories/GHSA-p82q-rxpm-hjpcThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.