SB2021050307 - Multiple vulnerabilities in GitLab Community Edition (CE) and Enterprise Edition (EE)
Published: May 3, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Improper Authorization (CVE-ID: CVE-2021-22209)
The vulnerability allows a remote attacker to bypass authorization checks.
The vulnerability exists due to the affected software does not properly validating authorisation tokens. A remote attacker can execute mutations on the target system.
2) Information disclosure (CVE-ID: CVE-2021-22206)
The vulnerability allows a remote user to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application. A remote administrator can gain unauthorized access to sensitive information on the system, such as pull mirror credentials.
3) Input validation error (CVE-ID: CVE-2021-22210)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when querying the repository branches through API. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
4) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-22208)
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions. A remote authenticated attacker can change the timestamp for issue creation or update.
5) Improper access control (CVE-ID: CVE-2021-22211)
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in Dependency Proxy. A remote authenticated attacker can impersonate a user with the same ID.
Remediation
Install update from vendor's website.