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CVE-2022-39308— GoCD API authentication of user access tokens subject to timing attack during comparison

Quick assessment

Affected
gocd gocd
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.

GoCD是一个持续交付服务器。 GoCD 19.2.0到19.11.0版本存在安全漏洞，该漏洞源于使用常规字符串比较来验证令牌而不是恒定时间算法，攻击者利用该漏洞可以对 GoCD 服务器 API 调用进行暴力攻击。

CVSS 6.5 · Medium EPSS 0.71% · P52
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I. Basic Information for CVE-2022-39308

Vulnerability Information
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Vulnerability Title
GoCD API authentication of user access tokens subject to timing attack during comparison
Source: CVE Program / CVE List V5
Vulnerability Description
GoCD is a continuous delivery server. GoCD helps you automate and streamline the build-test-release cycle for continuous delivery of your product. GoCD versions from 19.2.0 to 19.10.0 (inclusive) are subject to a timing attack in validation of access tokens due to use of regular string comparison for validation of the token rather than a constant time algorithm. This could allow a brute force attack on GoCD server API calls to observe timing differences in validations in order to guess an access token generated by a user for API access. This issue is fixed in GoCD version 19.11.0. As a workaround, users can apply rate limiting or insert random delays to API calls made to GoCD Server via a reverse proxy or other fronting web server. Another workaround, users may disallow use of access tokens by users by having an administrator revoke all access tokens through the "Access Token Management" admin function.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过时间差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
GoCD 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GoCD是一个持续交付服务器。 GoCD 19.2.0到19.11.0版本存在安全漏洞，该漏洞源于使用常规字符串比较来验证令牌而不是恒定时间算法，攻击者利用该漏洞可以对 GoCD 服务器 API 调用进行暴力攻击。
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
gocd gocd >= 19.2.0, < 19.11.0 -

II. Public POCs for CVE-2022-39308

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III. Intelligence Information for CVE-2022-39308

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Patches & Fixes for CVE-2022-39308 (1)

Vendor Advisories for CVE-2022-39308 (1)

Other References for CVE-2022-39308 (2)

Same Patch Batch · gocd · 2022-10-14 · 4 CVEs total

CVE-2022-39311 9.1 CRITICAL Compromised agents may be able to execute remote code on GoCD Server
CVE-2022-39309 4.9 MEDIUM GoCD server secret encryption/decryption key leaked to agents during material serializatio
CVE-2022-39310 4.9 MEDIUM Malicious agent may be able to impersonate another agent in GoCD

IV. Related Vulnerabilities

Same product: gocd
Same vendor: gocd
Same weakness: CWE-208

V. Comments for CVE-2022-39308

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