CVE-2020-5415— Concourse's GitLab auth allows impersonation
Quick assessment
Affected
VMware Tanzu Concourse
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.
Pivotal Software Concourse是美国Pivotal Software公司的一套用于持续开发的软件交付控制系统。 Pivotal Software Concourse 6.3.1之前版本和6.4.1之前版本（配置有GitLab auth connector）中存在安全漏洞。攻击者可利用该漏洞冒充其他用户。
Possible ATT&CK Techniques 1 AI
T1134 · Access Token Manipulation
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I. Basic Information for CVE-2020-5415
Vulnerability Information
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Vulnerability Title
Concourse's GitLab auth allows impersonation
Source: CVE Program / CVE List V5
Vulnerability Description
Concourse, versions prior to 6.3.1 and 6.4.1, in installations which use the GitLab auth connector, is vulnerable to identity spoofing by way of configuring a GitLab account with the same full name as another user who is granted access to a Concourse team. GitLab groups do not have this vulnerability, so GitLab users may be moved into groups which are then configured in the Concourse team.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Pivotal Software Concourse 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pivotal Software Concourse是美国Pivotal Software公司的一套用于持续开发的软件交付控制系统。 Pivotal Software Concourse 6.3.1之前版本和6.4.1之前版本（配置有GitLab auth connector）中存在安全漏洞。攻击者可利用该漏洞冒充其他用户。
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 |
|---|---|---|---|---|
| VMware Tanzu | Concourse | 6.4 ~ 6.4.1 | - |
|
II. Public POCs for CVE-2020-5415
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2020-5415 (1)
-
https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj x_refsource_CONFIRM
Other References for CVE-2020-5415 (1)
-
https://tanzu.vmware.com/security/cve-2020-5415 x_refsource_CONFIRM
IV. Related Vulnerabilities
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V. Comments for CVE-2020-5415
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