Vulnerability identifier: #VU49490

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1677

CWE-ID: CWE-200

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Azure Active Directory Pod Identity for Kubernets
Server applications / Directory software, identity management

Vendor: Microsoft

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The AAD pod identity enables users to assign identities to pods in Kubernetes clusters and fetch them from the pods using a regular IMDS (Azure Instance Metadata Service) request. When an identity is assigned to a pod, the pod can access to the IMDS endpoint and get a token of that identity. An attacker who successfully exploited this vulnerability can laterally steal the identities that are associated with different pods.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Azure Active Directory Pod Identity for Kubernets: 1.5 - 1.6.3

---

External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1677

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.