Summary
A vulnerability made public under the name SAD DNS affects Domain Name
System resolvers due to a vulnerability in the Linux kernel when
handling ICMP packets. The Siemens products which are affected
are listed below. For more information please see
https://www.saddns.net/.
Siemens has released updates for the affected products and recommends to update to the latest versions.
Vulnerabilities 1
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Unscored —CVE-2020-25705 Public exploit
A flaw in ICMP packets in the Linux kernel may allow an attacker to quickly scan open UDP ports. This flaw allows an of…
Revision history
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#11
Added fix for SIMATIC CP 1542SP-1, SIMATIC CP 1542SP-1 IRC, and SIMATIC CP 1543SP-1
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#10
Added fix for SIMATIC CP 1243-1 and CP 1243-8 IRC
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#9
Added fix for SIMATIC CP 1545-1
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#8
Added solution for the SIMATIC MV500 family products
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#7
Added solution for SIMATIC Cloud Connect 7 and TIM 1531 IRC, split TIM 1531 IRC into individual products, split SIMATIC Cloud Connect 7 into individual products
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#6
Corrected wrong product name SIMATIC CP 1243-7 to SIMATIC CP 1242-7 GPRS V2, updated solution for SIMATIC CP 1243-7 LTE, added solution for SIMATIC CP 1242-7 GPRS V2 and SCALANCE W1750D
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#5
Errata: Removed solution for TIM 1531 IRC as V2.2 did not fix the issue
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#4
Added solution for SIMATIC NET CP 1543-1
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#3
Added solution for SIMATIC NET CP 1243-7 LTE EU and SIMATIC NET CP 1243-7 LTE US
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#2
Added solution for TIM 1531 IRC
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#1
Publication Date
References
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SSA-324955: SAD DNS Attack in Linux Based Products - PDF Version
https://cert-portal.siemens.com/productcert/pdf/ssa-324955.pdf
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SSA-324955: SAD DNS Attack in Linux Based Products - TXT Version
https://cert-portal.siemens.com/productcert/txt/ssa-324955.txt