#VU29095 Input validation error in TCP/IP stack - CVE-2020-11902

Vulnerability identifier: #VU29095

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-11902

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
TCP/IP stack
Other software / Other software solutions

Vendor: Placeful Inc.

Description

The vulnerability allows a remote attacker to gain access to sensitive information or perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in IPv6 over IPv4 tunneling component. A remote attacker can send a specially crafted packet to the application and trigger out-of-bounds read, leading to information disclosure or denial of service condition.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

TCP/IP stack: before 6.0.1.66

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

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.