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CVE-2023-42815— Denial of service from malicious image manifest in kyverno

Quick assessment

Affected
kyverno kyverno
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kyverno是Kyverno开源的一个为 Kubernetes 设计的策略引擎。 Kyverno v1.11.0之前版本存在安全漏洞。攻击者利用该漏洞导致系统拒绝服务。

CVSS 3.1 · Low EPSS 0.67% · P50
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I. Basic Information for CVE-2023-42815

Vulnerability Information
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Vulnerability Title
Denial of service from malicious image manifest in kyverno
Source: CVE Program / CVE List V5
Vulnerability Description
Kyverno is a policy engine designed for Kubernetes. A security vulnerability was found in Kyverno where an attacker could cause denial of service of Kyverno. The vulnerability was in Kyvernos Notary verifier. An attacker would need control over the registry from which Kyverno would fetch signatures. With such a position, the attacker could return a malicious response to Kyverno, when Kyverno would send a request to the registry. The malicious response would cause denial of service of Kyverno, such that other users' admission requests would be blocked from being processed. This is a vulnerability in a new component released in v1.11.0. The only users affected by this are those that have been building Kyverno from source at the main branch which is not encouraged. Users consuming official Kyverno releases are not affected. There are no known cases of this vulnerability being exploited in the wild.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: CVE Program / CVE List V5
Vulnerability Title
Kyverno 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kyverno是Kyverno开源的一个为 Kubernetes 设计的策略引擎。 Kyverno v1.11.0之前版本存在安全漏洞。攻击者利用该漏洞导致系统拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
kyverno kyverno >= 80d139bb5d1d9d7e907abe851b97dc73821a5be2, < fec2992e3f9fcd6b9c62267522c09b182e7df73b -

II. Public POCs for CVE-2023-42815

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III. Intelligence Information for CVE-2023-42815

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Patches & Fixes for CVE-2023-42815 (3)

Vendor Advisories for CVE-2023-42815 (1)

Same Patch Batch · kyverno · 2023-11-13 · 4 CVEs total

CVE-2023-42813 6.1 MEDIUM Denial of service from malicious manifest in kyverno
CVE-2023-42816 6.1 MEDIUM Denial of service from malicious signature in kyverno
CVE-2023-42814 3.1 LOW Denial of service from malicious image manifest in kyverno

IV. Related Vulnerabilities

Same product: kyverno
Same vendor: kyverno
Same weakness: CWE-835

V. Comments for CVE-2023-42815

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