A vulnerability was found in Shimo VPN 4.1.5.1 (Network Encryption Software). It has been classified as critical. Affected is the function configureRoutingWithCommand of the component Helper Service. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An exploitable privilege escalation vulnerability exists in the Shimo VPN 4.1.5.1 helper service in the configureRoutingWithCommand function. A user with local access can use this vulnerability to raise their privileges to root. An attacker would need local access to the machine for a successful exploit.

The bug was discovered 04/15/2019. The weakness was published 04/17/2019. This vulnerability is traded as CVE-2018-4005 since 01/02/2018. The attack needs to be approached locally. Required for exploitation is a authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entries are available at VDB-133442, VDB-133441 and VDB-133439. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Network Encryption Software

Vendor

• Shimo

Name

• VPN

Version

• 4.1.5.1

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CPE 2.2info

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