Summary
The web server in SENTRON 7KT PAC1261 Data Manager Before V2.1.0 contains a request smuggling vulnerability in the Go Project's net/http package that could allow an attacker to retrieve authorization tokens that can be used to gain administrative control over the device.
Siemens has released a new version for SENTRON 7KT PAC1261 Data Manager and recommends to update to the latest version.
Vulnerabilities 1
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Critical 9.1
Request smuggling due to acceptance of invalid chunked data in net/http
The net/http package improperly accepts a bare LF as a line terminator in chunked data chunk-size lines. This can permit request smuggling if a net/http server is used in conjunction with a server that incorrectly accepts a bare LF as part of a chunk-ext.
Revision history
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#2
Initial CISA Republication of Siemens ProductCERT SSA-783943 advisory
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#1
Publication Date
References
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SSA-783943: HTTP Request Smuggling Vulnerability in SENTRON 7KT PAC1261 Data Manager Before V2.1.0 - HTML Version
https://cert-portal.siemens.com/productcert/html/ssa-783943.html
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ICS Advisory ICSA-26-134-14 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-26-134-14
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Recommended Practices
https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01
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Recommended Practices
https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
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Recommended Practices
https://www.cisa.gov/topics/industrial-control-systems
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Recommended Practices
https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
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Recommended Practices
https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf
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Recommended Practices
https://www.cisa.gov/news-events/news/targeted-cyber-intrusion-detection-and-mitigation-strategies-update-b