Input validation error in TCP/IP stack - CVE-2020-11901

Vulnerability identifier: #VU29094

CSH Severity: High

CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-11901

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The vulnerability exists due to insufficient validation of user-supplied input in DNS resolver component. A remote attacker can send a specially crafted packet and execute arbitrary code on the target system.

TCP/IP stack
PowerFlex rack
HG5G-V
HG4G-V
HG1P
HG3G-V
HG2G-V
HG1G
HG4G
HG3G
HG2G-5T
HG2G-5F

Install updates from vendor's website.

TCP/IP stack - update to 6.0.1.66
HG5G-V - update to 4.86
HG4G-V - update to 4.86
HG1P - update to 4.86
HG3G-V - update to 4.86
HG2G-V - update to 4.86
HG1G - update to 4.86
HG4G - update to 4.86
HG3G - update to 4.86
HG2G-5T - update to 4.86
HG2G-5F - update to 4.86
PowerFlex rack - addressed in versions 3.3.8.2, 3.4.3.2, 3.5.3.2

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

• Multiple vulnerabilities in Treck TCP/IP Stack
• Multiple vulnerabilities in Dell EMC PowerFlex rack
• Multiple vulnerabilities in IDEC Operator Interfaces products