Multiple vulnerabilities in Siemens SiPass
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2017-9939 CVE-2017-9940 CVE-2017-9941 CVE-2017-9942 |
| CWE-ID | CWE-287 CWE-264 CWE-300 CWE-200 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
SiPass Client/Desktop applications / Other client software |
| Vendor | Siemens |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Authentication bypass
EUVDB-ID: #VU7491
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 - Improper Authentication
Exploit availability: No
DescriptionThe 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.
Update to version 2.70.
SiPass: 2.60 - 2.65
External linkshttp://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-339433.pdf
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.
2) Security restrictions bypass
EUVDB-ID: #VU7492
Risk: Low
CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-9940
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a remote low-privileged attacker to bypass security restrictions on the target system.
The weakness exists due to improper permissions and access controls. A remote attacker can bypass security restrictions and read or write files on the file system of the SiPass integrated server over the network.
Successful exploitation of the vulnerability results in information disclosure and modification.
Update to version 2.70.
SiPass: 2.60 - 2.65
External linkshttp://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-339433.pdf
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Man-in-the-middle attack
EUVDB-ID: #VU7493
Risk: Low
CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-9941
CWE-ID:
CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to conduct a man-in-the-middle attack.
The weakness exists due to improper permissions and access controls. A remote attacker can perform a man-in-in-the-middle attack, gain position between the SiPass integrated server and SiPass integrated clients and read or modify the network communication.
Update to version 2.70.
SiPass: 2.60 - 2.65
External linkshttp://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-339433.pdf
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.
4) Information disclosure
EUVDB-ID: #VU7494
Risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-9942
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to obtain potentially sensitive information.
The weakness exists due to improper permissions and access controls. A local attacker can gain access to credentials on the system.
Successful exploitation of the vulnerability results in information disclosure.
Update to version 2.70.
SiPass: 2.60 - 2.65
External linkshttp://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-339433.pdf
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.
