#VU10152 Authentication bypass in Lenovo Service Framework - CVE-2017-3765

Vulnerability identifier: #VU10152

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-3765

CWE-ID: CWE-592

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Lenovo Service Framework
Client/Desktop applications / Other client software

Vendor: Lenovo

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

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External links
https://support.lenovo.com/ua/en/product_security/len-16095

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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.