CVE-2023-30617: kruise Privilege Escalation — Fix

Description

Kruise provides automated management of large-scale applications on Kubernetes. Starting in version 0.8.0 and prior to versions 1.3.1, 1.4.1, and 1.5.2, an attacker who has gained root privilege of the node that kruise-daemon run can leverage the kruise-daemon pod to list all secrets in the entire cluster. After that, the attacker can leverage the "captured" secrets (e.g. the kruise-manager service account token) to gain extra privileges such as pod modification. Versions 1.3.1, 1.4.1, and 1.5.2 fix this issue. A workaround is available. For users that do not require imagepulljob functions, they can modify kruise-daemon-role to drop the cluster level secret get/list privilege.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Weakness Type (CWE)

CWE-250 CWE-250

CWE-269 CWE-269

Affected Products

Vendor	Product	Versions
openkruise	kruise	0.8.0 — 1.3.1
openkruise	kruise	1.4.0 — 1.4.1
openkruise	kruise	1.5.0 — 1.5.2

References

Advisories & Patches

https://github.com/openkruise/kruise/security/advisories/GHSA-437m-7hj5-9mpw https://github.com/openkruise/kruise/security/advisories/GHSA-437m-7hj5-9mpw

Frequently Asked Questions

What is CVE-2023-30617? +

Kruise provides automated management of large-scale applications on Kubernetes. Starting in version 0.8.0 and prior to versions 1.3.1, 1.4.1, and 1.5.2, an attacker who has gained root privilege of the node that kruise-daemon run can leverage the kruise-daemon pod to list all secrets in the entire cluster. After that, the attacker can leverage the "captured" secrets (e.g. the kruise-manager service account token) to gain extra privileges such as pod modification. Versions 1.3.1, 1.4.1, and 1.5.2 fix this issue. A workaround is available. For users that do not require imagepulljob functions, they can modify kruise-daemon-role to drop the cluster level secret get/list privilege. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2023-30617? +

CVE-2023-30617 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-30617? +

CVE-2023-30617 affects products from openkruise, specifically: kruise. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-30617? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-30617