#VU49125 Out-of-bounds write in TCP/IP stack - CVE-2020-27337

Vulnerability identifier: #VU49125

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-27337

CWE-ID: CWE-787

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 perform a DoS attack or compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input within Treck IPv6 component. A remote attacker can send specially crafted packets to the system, trigger out-of-bounds write and crash the system or potentially execute arbitrary code.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

TCP/IP stack: 6.0.1.66 - 6.0.1.67

---

External links
https://treck.com/vulnerability-response-information/
https://ics-cert.us-cert.gov/advisories/icsa-20-353-01

---

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.