Authentication bypass in Lenovo Service Framework

1) Authentication bypass

EUVDB-ID: #VU10152

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-3765

CWE-ID: CWE-592 - Authentication Bypass Issues

Exploit availability: No

Description

The vulnerability allows a local attacker to bypass security restrictions on the target system.

The weakness exists in the Enterprise Network Operating System (ENOS) firmware due to the presence of a mechanism, known as HP Backdoor, for bypassing authentication on the affected switches. A local attacker can use credentials unique to a targeted switch to authenticate to the switch, bypass authentication and gain administrative-level access to the switch.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Lenovo Service Framework: All versions

CPE2.3

• cpe:2.3:a:lenovo:lenovo_service_framework:*:*:*:*:*:*:*:*

External links

http://support.lenovo.com/ua/en/product_security/len-16095

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.