A vulnerability has been identified in Nucleus NET (All versions < V5.2), Nucleus Source Code (Versions including affected DNS modules). The DNS domain name label parsing functionality does not properly validate the names in DNS-responses. The parsing of malformed responses could result in a write past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to execute code in the context of the current process or cause a denial-of-service condition. Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15795 Reference (s):
- https://us-cert.cisa.gov/ics/advisories/icsa-21-103-04
- URL: https://us-cert.cisa.gov/ics/advisories/icsa-21-103-04
- https://cert-portal.siemens.com/productcert/pdf/ssa-185699.pdf
- URL: https://cert-portal.siemens.com/productcert/pdf/ssa-185699.pdf