CVE-2021-31401

Severity CVSS v4.0:

Pending analysis

Type:

CWE-20 Input Validation

Publication date:

19/08/2021

Last modified:

26/08/2021

Description

An issue was discovered in tcp_rcv() in nptcp.c in HCC embedded InterNiche 4.0.1. The TCP header processing code doesn&#39;t sanitize the value of the IP total length field (header length + data length). With a crafted IP packet, an integer overflow occurs whenever the value of the IP data length is calculated by subtracting the length of the header from the total length of the IP packet.

Impact

Vector 3.x

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

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x

7.50

Severity 3.x

HIGH

Vector 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

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

Base Score 2.0

5.00

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:hcc-embedded:nichestack::::::::		4.3 (excluding)
cpe:2.3:o:siemens:sentron_3wl_com35_firmware::::::::		1.2.0 (excluding)
cpe:2.3:h:siemens:sentron_3wl_com35:-:::::::*
cpe:2.3:o:siemens:sentron_3wa_com190_firmware::::::::		2.0.0 (excluding)
cpe:2.3:h:siemens:sentron_3wa_com190:-:::::::*

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

CVE-2021-31401

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools