PT-2018-2165 · Siemens · Simatic S7-1200+1

Published 2018-11-13 · Updated 2019-10-09 · CVE-2018-13815

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions SIMATIC S7-1200 versions all SIMATIC S7-1500 versions prior to V2.6

Description A vulnerability has been identified that could allow an attacker to exhaust the available connection pool of an affected device by opening a sufficient number of connections to it. Successful exploitation requires an attacker to be able to send packets to port 102/tcp of the affected device. No user interaction and no user privileges are required to exploit this issue. If exploited, it could cause a Denial-of-Service condition impacting the availability of the system. At the time of advisory publication, no public exploitation of this issue was known.

Recommendations For SIMATIC S7-1200, restrict access to port 102/tcp to minimize the risk of exploitation. For SIMATIC S7-1500 versions prior to V2.6, consider upgrading to version V2.6 or later to resolve the issue. As a temporary workaround, consider limiting the number of connections to the device to prevent exhaustion of the available connection pool.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

CWE-410

Related Identifiers

BDU:2019-00118

CVE-2018-13815

Affected Products

Simatic S7-1200

Simatic S7-1500

References · 6

• https://bdu.fstec.ru/vul/2019-00118 · Security Note
• https://cert-portal.siemens.com/productcert/pdf/ssa-584286.pdf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-13815 · Security Note
• https://osv.dev/vulnerability/CVE-2018-13815 · Vendor Advisory
• https://ics-cert.us-cert.gov/advisories/ICSA-18-317-05 · Note
• http://securityfocus.com/bid/105928 · Note