Information disclosure in TCP/IP stack - CVE-2020-11909

Vulnerability identifier: #VU29102

CSH Severity: Low

CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-11909

CWE-ID: CWE-200

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to improper input validation in IPv4 component. A remote attacker can send a specially crafted packet and gain unauthorized access to sensitive information on the 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