ID

VAR-201402-0435

TITLE

Siemens SIMATIC S7-1200 PLC Systems Replay Security Bypass and Denial of Service Vulnerabilities

DESCRIPTION

SIMATIC is the collective name for the Siemens Automation product line, from SIEMENS + Automatic. It was born in 1958 and has a history of 50 years, covering PLC, industrial software and HMI. It is the global leading brand of automation. Siemens SIMATIC S7-1200 PLC Systems has security bypass and denial of service vulnerabilities in implementation that can be exploited by attackers to send arbitrary commands through replay attacks to perform unauthorized operations on affected controllers. An attacker could exploit the denial of service vulnerability by placing the affected controller system in the stop/defect state. Siemens SIMATIC S7-1200 Programmable Logic Controller (PLC) is prone to a security-bypass vulnerability and a denial-of-service vulnerability. ---------------------------------------------------------------------- Join Secunia @ FIRST Conference, 12-17 June, Hilton Vienna, Austria See to the presentation "The Dynamics and Threats of End-Point Software Portfolios" by Secunia's Research Analyst Director, Stefan Frei. Read more: http://conference.first.org/ ---------------------------------------------------------------------- TITLE: Siemens SIMATIC S7-1200 Controller Communication Replay and Denial of Service SECUNIA ADVISORY ID: SA44961 VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/44961/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=44961 RELEASE DATE: 2011-06-16 DISCUSS ADVISORY: http://secunia.com/advisories/44961/#comments AVAILABLE ON SITE AND IN CUSTOMER AREA: * Last Update * Popularity * Comments * Criticality Level * Impact * Where * Solution Status * Operating System / Software * CVE Reference(s) http://secunia.com/advisories/44961/ ONLY AVAILABLE IN CUSTOMER AREA: * Authentication Level * Report Reliability * Secunia PoC * Secunia Analysis * Systems Affected * Approve Distribution * Remediation Status * Secunia CVSS Score * CVSS https://ca.secunia.com/?page=viewadvisory&vuln_id=44961 ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI: * AUTOMATED SCANNING http://secunia.com/vulnerability_scanning/personal/ http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/ DESCRIPTION: Two vulnerabilities have been reported in Siemens SIMATIC S7-1200, which can be exploited by malicious people to disclose sensitive information and cause a DoS (Denial of Service). 1) The engineering software sends unencrypted data to the Programmable Logic Controllers (PLC), which can be exploited to replay commands sent by the engineering software via e.g. Man-in-the-Middle (MitM) attacks. 2) An unspecified error within the web server can be exploited to cause a DoS. No further information is currently available. The vulnerabilities are reported in firmware version 02.00.02. Other versions may also be affected. SOLUTION: The vendor recommends to disable the web server. Reportedly, the vulnerabilities will be fixed in an upcoming version. PROVIDED AND/OR DISCOVERED BY: Dillon Beresford, NSS Labs. ORIGINAL ADVISORY: Siemens: http://support.automation.siemens.com/dnl/TY/TYzNTUxOQAA_50428932_Akt/Siemens_Security_Advisory_SSA-625789.pdf http://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=en&objid=50428932&caller=view Dillon Beresford: http://news.infracritical.com/pipermail/scadasec/2011-May/019934.html OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ DEEP LINKS: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ EXPLOIT: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/ ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help private users keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/advisories/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/advisories/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. ---------------------------------------------------------------------- Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org ----------------------------------------------------------------------

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

THREAT TYPE

network

TYPE

Unknown

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Dillon Beresford

SOURCES

LAST UPDATE DATE

2022-05-17T02:08:08.935000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE