Read-Only Authentication Bypass in Lenovo XClarity Controller Firmware
CVE-2021-3956

4.3MEDIUM

Key Information:

Vendor
Lenovo
Status
Xclarity Controller (xcc)
Vendor
CVE Published:
18 May 2022

Summary

A read-only authentication bypass vulnerability exists in Lenovo XClarity Controller firmware, particularly affecting devices utilizing LDAP Authentication Only Mode with an LDAP server that allows 'unauthenticated bind', such as Microsoft Active Directory. Through this vulnerability, an unauthorized user can gain read-only access to the XCC, allowing them to view configuration details without the ability to make changes. Devices configured for local authentication or those requiring authenticated or anonymous binds are not vulnerable.

Affected Version(s)

XClarity Controller (XCC) various Third Quarter 2021 releases

References

https://support.lenovo.com/us/en/product_security/LEN-72074
x_refsource_MISC

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.