CVE-2022-23551 AAD Pod Identity obtaining token with backslash
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2022-23551?
CVE-2022-23551 is a medium-severity vulnerability in Azure aad-pod-identity, published on 21 Dec 2022.
Official 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.
Which versions are affected by CVE-2022-23551?
3 open source packages ship an affected version, including github.com/Azure/aad-pod-identity. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/Azure/aad-pod-identity Go | All versions | 1.8.13 |
github.com/Azure/aad-pod-identity Go | All versions | 1.8.13 |
github.com/Azure/aad-pod-identity Go | All versions | 1.8.13 |
Products include Microsoft Azure Ad Pod Identity.
How do I fix CVE-2022-23551?
Upgrade github.com/Azure/aad-pod-identity to 1.8.13 or later.
Is CVE-2022-23551 being exploited?
There is no known exploitation of CVE-2022-23551 in the wild and no public exploit code.
Sources
Also known as AZL-34277, GHSA-p82q-rxpm-hjpc, GO-2022-1181.