Integer Underflow Vulnerability in TRENDnet TI-PG1284i Switch
CVE-2021-33316

9.8CRITICAL

Key Information:

Vendor

Trendnet

Status
Ti-pg1284i Firmware
Vendor
CVE Published:
11 May 2022

What is CVE-2021-33316?

The TRENDnet TI-PG1284i switch (hw v2.0R) versions prior to 2.0.2.S0 are susceptible to an integer underflow vulnerability in their LLDP component. This flaw stems from inadequate validation of the length field in the ChassisID TLV. An attacker can exploit this by sending a specially crafted LLDP packet, which may result in an integer underflow that allows negative values to be processed by the memcpy() function. This may ultimately lead to buffer overflow or unauthorized memory access, potentially compromising the device's stability and security.

References

https://www.trendnet.com/support/view.asp?cat=4&id=81
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2021-33316 : Integer Underflow Vulnerability in TRENDnet TI-PG1284i Switch