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CVE-2023-32691— ginuerzh/gost vulnerable to Timing Attack

Quick assessment

Affected
ginuerzh gost
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.

GO Simple Tunnel是ginuerzh个人开发者的一个 GO 语言实现的安全隧道。 GO Simple Tunnel存在安全漏洞，该漏洞源于密码、令牌和API密钥等敏感信息只能使用恒定时间比较函数进行比较，这种比较是不安全的，攻击者可以发起侧信道定时攻击来猜测密码。

CVSS 5.9 · Medium EPSS 0.57% · P47

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2023-32691

Vulnerability Information
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Vulnerability Title
ginuerzh/gost vulnerable to Timing Attack
Source: CVE Program / CVE List V5
Vulnerability Description
gost (GO Simple Tunnel) is a simple tunnel written in golang. Sensitive secrets such as passwords, token and API keys should be compared only using a constant-time comparison function. Untrusted input, sourced from a HTTP header, is compared directly with a secret. Since this comparison is not secure, an attacker can mount a side-channel timing attack to guess the password. As a workaround, this can be easily fixed using a constant time comparing function such as `crypto/subtle`'s `ConstantTimeCompare`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
GO Simple Tunnel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GO Simple Tunnel是ginuerzh个人开发者的一个 GO 语言实现的安全隧道。 GO Simple Tunnel存在安全漏洞，该漏洞源于密码、令牌和API密钥等敏感信息只能使用恒定时间比较函数进行比较，这种比较是不安全的，攻击者可以发起侧信道定时攻击来猜测密码。
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
ginuerzh gost <= 2.11.5 -

II. Public POCs for CVE-2023-32691

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III. Intelligence Information for CVE-2023-32691

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Vendor Advisories for CVE-2023-32691 (1)

Other References for CVE-2023-32691 (1)

IV. Related Vulnerabilities

Same weakness: CWE-203

V. Comments for CVE-2023-32691

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