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CVE-2023-27483— fieldpath's Paved.SetValue allows growing arrays up to arbitrary sizes in crossplane-runtime

Quick assessment

Affected
crossplane crossplane-runtime
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.

crossplane是一个无需编写代码即可构建云原生控制平面的框架。 crossplane-runtime存在资源管理错误漏洞，该漏洞源于用户提供的输入未经适当验证，可能会使用过多的内存并导致内存不足。

CVSS 5.9 · Medium EPSS 0.80% · P55

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2023-27483

Vulnerability Information
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Vulnerability Title
fieldpath's Paved.SetValue allows growing arrays up to arbitrary sizes in crossplane-runtime
Source: CVE Program / CVE List V5
Vulnerability Description
crossplane-runtime is a set of go libraries used to build Kubernetes controllers in Crossplane and its related stacks. An out of memory panic vulnerability has been discovered in affected versions. Applications that use the `Paved` type's `SetValue` method with user provided input without proper validation might use excessive amounts of memory and cause an out of memory panic. In the fieldpath package, the Paved.SetValue method sets a value on the Paved object according to the provided path, without any validation. This allows setting values in slices at any provided index, which grows the target array up to the requested index, the index is currently capped at max uint32 (4294967295) given how indexes are parsed, but that is still an unnecessarily large value. If callers are not validating paths' indexes on their own, which most probably are not going to do, given that the input is parsed directly in the SetValue method, this could allow users to consume arbitrary amounts of memory. Applications that do not use the `Paved` type's `SetValue` method are not affected. This issue has been addressed in versions 0.16.1 and 0.19.2. Users are advised to upgrade. Users unable to upgrade can parse and validate the path before passing it to the `SetValue` method of the `Paved` type, constraining the index size as deemed appropriate.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
crossplane 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
crossplane是一个无需编写代码即可构建云原生控制平面的框架。 crossplane-runtime存在资源管理错误漏洞，该漏洞源于用户提供的输入未经适当验证，可能会使用过多的内存并导致内存不足。
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
crossplane crossplane-runtime >= 0.17.0, < 0.19.2 -

II. Public POCs for CVE-2023-27483

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III. Intelligence Information for CVE-2023-27483

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Patches & Fixes for CVE-2023-27483 (1)

Vendor Advisories for CVE-2023-27483 (1)

IV. Related Vulnerabilities

Same product: crossplane-runtime
Same vendor: crossplane
Same weakness: CWE-400

V. Comments for CVE-2023-27483

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