Summary
Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition and memory corruption.
Vulnerabilities 1
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Medium 6.8
Out-of-bounds Write in o6 Automation GmbH Open62541
In builds with PubSub and JSON enabled, a crafted JSON message can cause the decoder to write beyond a heap-allocated array before authentication, reliably crashing the process and corrupting memory.
Revision history
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#1
Initial Publication
References
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ICSA Advisory ICSA-26-036-03 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-26-036-03
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Recommended Practices
https://www.cisa.gov/uscert/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/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf
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Recommended Practices
https://www.cisa.gov/topics/industrial-control-systems
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Recommended Practices
https://www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf
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Recommended Practices
https://www.cisa.gov/uscert/ncas/tips/ST04-014
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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/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
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Recommended Practices
https://www.cisa.gov/news-events/news/targeted-cyber-intrusion-detection-and-mitigation-strategies-update-b
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Recommended Practices
https://www.cisa.gov/secure-our-world/teach-employees-avoid-phishing
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Recommended Practices
https://www.cisa.gov/news-events/news/avoiding-social-engineering-and-phishing-attacks