What is the CVSS score of CVE-2022-31076?

CVE-2022-31076 has a CVSS 3.1 base score of 5.7 (Medium). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.6%.

Is there a public PoC exploit available for CVE-2022-31076?

Yes, a public proof-of-concept exploit is available for CVE-2022-31076. Prioritise patching immediately. EPSS: 0.6%.

Is there a patch available for CVE-2022-31076?

Yes, a patch is available for CVE-2022-31076. Update the affected software to the latest version immediately.

Kubernetes CVE-2022-31076

MEDIUM

NULL Pointer Dereference (CWE-476)

2022-06-27 security-advisories@github.com

Denial Of Service Kubernetes Null Pointer Dereference Kubeedge

5.7

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.7 MEDIUM

AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Jun 27, 2022 - 20:15 nvd

MEDIUM 5.7

DescriptionNVD

KubeEdge is built upon Kubernetes and extends native containerized application orchestration and device management to hosts at the Edge. In affected versions a malicious message can crash CloudCore by triggering a nil-pointer dereference in the UDS Server. Since the UDS Server only communicates with the CSI Driver on the cloud side, the attack is limited to the local host network. As such, an attacker would already need to be an authenticated user of the Cloud. Additionally it will be affected only when users turn on the unixsocket switch in the config file cloudcore.yaml. This bug has been fixed in Kubeedge 1.11.0, 1.10.1, and 1.9.3. Users should update to these versions to resolve the issue. Users unable to upgrade should sisable the unixsocket switch of CloudHub in the config file cloudcore.yaml.

AnalysisAI

KubeEdge is built upon Kubernetes and extends native containerized application orchestration and device management to hosts at the Edge. Rated medium severity (CVSS 5.7), this vulnerability is low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. KubeEdge is built upon Kubernetes and extends native containerized application orchestration and device management to hosts at the Edge. In affected versions a malicious message can crash CloudCore by triggering a nil-pointer dereference in the UDS Server. Since the UDS Server only communicates with the CSI Driver on the cloud side, the attack is limited to the local host network. As such, an attacker would already need to be an authenticated user of the Cloud. Additionally it will be affected only when users turn on the unixsocket switch in the config file cloudcore.yaml. This bug has been fixed in Kubeedge 1.11.0, 1.10.1, and 1.9.3. Users should update to these versions to resolve the issue. Users unable to upgrade should sisable the unixsocket switch of CloudHub in the config file cloudcore.yaml. Affected products include: Linuxfoundation Kubeedge.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.