Vulnerability identifier: #VU7491

Vulnerability risk: Medium

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-9939

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SiPass
Client/Desktop applications / Other client software

Vendor: Siemens

Description
The vulnerability allows a remote attacker to bypass authentication on the target system.

The weakness exists due to improper authentication. An attacker with network access to the SiPass integrated server can bypass the authentication mechanism and perform administrative operations.

Successful exploitation of the vulnerability results in access to the system.

Mitigation
Update to version 2.70.

Vulnerable software versions

SiPass: 2.60 - 2.65

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External links
http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-339433.pdf

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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