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CVE-2024-42475— OAuth library for nim allows insecure generation of state values by generateState - entropy too low and uses regular PRNG instead of CSPRNG

Quick assessment

Affected
CORDEA oauth
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

oauth是Yoshihiro Tanaka个人开发者的一个适用于 nim 的 oauth 库。 oauth 0.11之前版本存在安全漏洞，该漏洞源于generateState函数生成的state值没有足够的熵，攻击者可以成功猜出这些值，从而对用户执行跨站请求伪造攻击，将用户的会话与攻击者的受保护资源相关联。

CVSS 6.5 · Medium EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1556 · Modify Authentication Process
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I. Basic Information for CVE-2024-42475

Vulnerability Information
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Vulnerability Title
OAuth library for nim allows insecure generation of state values by generateState - entropy too low and uses regular PRNG instead of CSPRNG
Source: CVE Program / CVE List V5
Vulnerability Description
In the OAuth library for nim prior to version 0.11, the `state` values generated by the `generateState` function do not have sufficient entropy. These can be successfully guessed by an attacker allowing them to perform a CSRF vs a user, associating the user's session with the attacker's protected resources. While `state` isn't exactly a cryptographic value, it should be generated in a cryptographically secure way. `generateState` should be using a CSPRNG. Version 0.11 modifies the `generateState` function to generate `state` values of at least 128 bits of entropy while using a CSPRNG.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用不充分的随机数
Source: CVE Program / CVE List V5
Vulnerability Title
oauth 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
oauth是Yoshihiro Tanaka个人开发者的一个适用于 nim 的 oauth 库。 oauth 0.11之前版本存在安全漏洞，该漏洞源于generateState函数生成的state值没有足够的熵，攻击者可以成功猜出这些值，从而对用户执行跨站请求伪造攻击，将用户的会话与攻击者的受保护资源相关联。
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
CORDEA oauth < 0.11 -

II. Public POCs for CVE-2024-42475

# POC Description Source Link Shenlong Link
1 A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN (versions 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier) and FortiProxy SSL-VPN (versions 7.2.0 through 7.2.1, 7.0.7 and earlier) may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests. https://github.com/projectdiscovery/nuclei-templates/blob/main/code/cves/2022/CVE-2022-42475.yaml POC Details
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III. Intelligence Information for CVE-2024-42475

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Vendor Advisories for CVE-2024-42475 (1)

Other References for CVE-2024-42475 (1)

IV. Related Vulnerabilities

Same product: oauth
Same vendor: CORDEA
Same weakness: CWE-330

V. Comments for CVE-2024-42475

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