TRENDnet TI-PG1284i prior 2.0.2.S0 lldp memcpy integer underflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00

A vulnerability was found in TRENDnet TI-PG1284i. It has been classified as critical. Affected is the function memcpy of the component lldp. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-191. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The TRENDnet TI-PG1284i switch(hw v2.0R) prior to version 2.0.2.S0 suffers from an integer underflow vulnerability. This vulnerability exists in its lldp related component. Due to lack of proper validation on length field of PortID TLV, by sending a crafted lldp packet to the device, integer underflow would occur and the negative number will be passed to memcpy() later, which may cause buffer overflow or invalid memory access.

The weakness was released 05/12/2022. The advisory is available at trendnet.com. This vulnerability is traded as CVE-2021-33315 since 05/20/2021. The exploitability is told to be easy. The attack needs to approached within the local network. The successful exploitation requires a authentication. Technical details are known, but there is no available exploit.

Upgrading to version 2.0.2.S0 eliminates this vulnerability.

Productinfoedit

Vendor

TRENDnet

Name

TI-PG1284i

CPE 2.3infoedit

🔒

CPE 2.2infoedit

🔒

CVSSv3infoedit

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2infoedit

AV	AC	Au	C	I	A
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🔍	🔍	🔍	🔍	🔍	🔍
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfoedit

Class: Memory corruption
CWE: CWE-191
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: TI-PG1284i 2.0.2.S0

Timelineinfoedit

05/20/2021 CVE reserved
05/12/2022 +357 days Advisory disclosed
05/12/2022 +0 days VulDB entry created
05/14/2022 +2 days VulDB last update

Sourcesinfoedit

Advisory: trendnet.com
Status: Confirmed

CVE: CVE-2021-33315 (🔒)

Entryinfoedit

Created: 05/12/2022 12:02 PM
Updated: 05/14/2022 01:54 PM
Changes: (1) source_cve_nvd_summary
Complete: 🔍