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CVE-2023-6680— Improper Certificate Validation in GitLab

Quick assessment

Affected
GitLab GitLab
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.

GitLab是美国GitLab公司的一个开源的端到端软件开发平台，具有内置的版本控制、问题跟踪、代码审查、CI/CD（持续集成和持续交付）等功能。 GitLab 存在信任管理问题漏洞，该漏洞源于允许攻击者在给定公钥的情况下以其他用户身份进行身份验证 使用智能卡身份验证。 智能卡身份验证是一项实验性功能，必须由管理员手动启用。

CVSS 7.4 · High EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 3

VendorProduct Version RangeStatus
GitLab GitLab 11.6< 16.4.4 affected
16.5< 16.5.4 affected
16.6< 16.6.2 affected
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I. Basic Information for CVE-2023-6680

Vulnerability Information
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Vulnerability Title
Improper Certificate Validation in GitLab
Source: CVE Program / CVE List V5
Vulnerability Description
An improper certificate validation issue in Smartcard authentication in GitLab EE affecting all versions from 11.6 prior to 16.4.4, 16.5 prior to 16.5.4, and 16.6 prior to 16.6.2 allows an attacker to authenticate as another user given their public key if they use Smartcard authentication. Smartcard authentication is an experimental feature and has to be manually enabled by an administrator.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
GitLab 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GitLab是美国GitLab公司的一个开源的端到端软件开发平台，具有内置的版本控制、问题跟踪、代码审查、CI/CD（持续集成和持续交付）等功能。 GitLab 存在信任管理问题漏洞，该漏洞源于允许攻击者在给定公钥的情况下以其他用户身份进行身份验证 使用智能卡身份验证。 智能卡身份验证是一项实验性功能，必须由管理员手动启用。
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
GitLab GitLab 11.6 ~ 16.4.4 cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2023-6680

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III. Intelligence Information for CVE-2023-6680

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Other References for CVE-2023-6680 (1)

Same Patch Batch · GitLab · 2023-12-15 · 6 CVEs total

CVE-2023-6051 5.7 MEDIUM Improper Control of Generation of Code ('Code Injection') in GitLab
CVE-2023-5512 4.8 MEDIUM Improper Control of Generation of Code ('Code Injection') in GitLab
CVE-2023-3904 4.3 MEDIUM Improper Validation of Specified Type of Input in GitLab
CVE-2023-5061 4.3 MEDIUM Missing Authorization in GitLab
CVE-2023-3511 2.0 LOW Incorrect Authorization in GitLab

IV. Related Vulnerabilities

Same product: GitLab
Same vendor: GitLab
Same weakness: CWE-295

V. Comments for CVE-2023-6680

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