#VU86369 Uncontrolled Memory Allocation in serving - CVE-2023-48713

Vulnerability identifier: #VU86369

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-48713

CWE-ID: CWE-789

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
serving
Other software / Other software solutions

Vendor: Knative

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to unbound memory allocation. A remote user who controls a pod to a degree where they can control the responses from the /metrics endpoint can cause denial-of-service of the autoscaler.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

serving: 0.1.0 - 1.11.2

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External links
https://github.com/knative/serving/security/advisories/GHSA-qmvj-4qr9-v547
https://github.com/knative/serving/commit/012ee2509231b80b7842139bfabc30516d3026ca
https://github.com/knative/serving/commit/101f814112b9ca0767f457e7e616b46205551cf1
https://github.com/knative/serving/commit/fff40ef7bac9be8380ec3d1c70fc15b57093382a

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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