Privilege escalation in Lenovo System Update



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-9063
CWE-ID CWE-120
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Lenovo System Update
Client/Desktop applications / Office applications

Vendor Lenovo

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU12686

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-2018-9063

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a local attacker to gain elevated privivleges on the target system.

The weakness exists in MapDrv (C:\Program Files\Lenovo\System Update\mapdrv.exe) due to buffer overflow. A local attacker entering very large user ID or password can overrun the program's buffer and execute arbitrary code with root privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update to version 5.07.0072 or later.

Vulnerable software versions

Lenovo System Update: 5.07.002 - 5.07.0070

CPE2.3 External links

https://support.lenovo.com/ua/ru/solutions/len-19625


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.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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