Improper Handling of Length Parameter Inconsistency in TCP/IP stack - CVE-2020-11896

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to improper handling of length parameter inconsistency in IPv4/UDP component. A remote attacker can send a specially crafted packet and execute arbitrary code on the target system. 

Affected software

How to mitigate CVE-2020-11896

Links to Public Exploits and PoC-codes

• Exploit #8637 - ripple20-digi-connect-exploit (RCE exploit for CVE-2020-11896 (Ripple20 IP-in-IP Heap Overflow Vulnerability) targeting Digi Connect ME 9210) (November 30, 2022)
• Exploit #3580 - Treck20-Related (PoC for CVE-2020-11896 Treck TCP/IP stack and device asset investigation) (July 22, 2020)

External References

• https://ics-cert.us-cert.gov/advisories/icsa-20-168-01
• https://treck.com/vulnerability-response-information/
• https://kb.cert.org/vuls/id/257161

Related Security Bulletins

• Multiple vulnerabilities in Treck TCP/IP Stack
• Multiple vulnerabilities in Dell EMC PowerFlex rack