Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-33316

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
11/05/2022
Last modified:
12/07/2022

Description

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 ChassisID 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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
7.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:trendnet:ti-pg1284i_firmware:*:*:*:*:*:*:*:* 2.0.2.s0 (excluding)
cpe:2.3:h:trendnet:ti-pg1284i:2.0r:*:*:*:*:*:*:*
cpe:2.3:o:trendnet:ti-g102i_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:trendnet:ti-g102i:-:*:*:*:*:*:*:*
cpe:2.3:o:trendnet:ti-g160i_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:trendnet:ti-g160i:-:*:*:*:*:*:*:*
cpe:2.3:o:trendnet:ti-g642i_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:trendnet:ti-g642i:-:*:*:*:*:*:*:*
cpe:2.3:o:trendnet:ti-pg102i_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:trendnet:ti-pg102i:-:*:*:*:*:*:*:*
cpe:2.3:o:trendnet:ti-pg541i_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:trendnet:ti-pg541i:-:*:*:*:*:*:*:*
cpe:2.3:o:trendnet:ti-rp262i_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:trendnet:ti-rp262i:-:*:*:*:*:*:*:*
cpe:2.3:o:trendnet:teg-30102ws_firmware:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools