Multiple vulnerabilities in Siemens SIMATIC TIM 1531 IRC



Published: 2021-06-10
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE ID CVE-2020-8169
CVE-2020-8286
CWE ID CWE-200
CWE-299
Exploitation vector Network
Public exploit N/A
Vulnerable software
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SIMATIC TIM 1531 IRC
Hardware solutions / Firmware

Vendor Siemens

Security Advisory

1) Information disclosure

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-8169

CWE-ID: CWE-200 - Information Exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to cURL sends a DNS query with the provided credentials for HTTP authentication when processing redirects. A remote attacker that controls a DNS server can gain access to HTTP authenticated credentials.

Mitigation

Install update from vendor's website.

Vulnerable software versions

SIMATIC TIM 1531 IRC: before 2.2

CPE External links

https://ics-cert.us-cert.gov/advisories/icsa-21-159-10
https://cert-portal.siemens.com/productcert/txt/ssa-200951.txt

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) Improper Check for Certificate Revocation

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-8286

CWE-ID: CWE-299 - Improper Check for Certificate Revocation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to incorrectly implemented checks for OCSP stapling. A remote attacker can provide a fraudulent OCSP response that would appear fine, instead of the real one.

Mitigation

Install update from vendor's website.

Vulnerable software versions

SIMATIC TIM 1531 IRC: before 2.2

CPE External links

https://ics-cert.us-cert.gov/advisories/icsa-21-159-10
https://cert-portal.siemens.com/productcert/txt/ssa-200951.txt

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.



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