Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2021-20027

Severity CVSS v4.0:
Pending analysis
Type:
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Publication date:
14/06/2021
Last modified:
13/09/2021

Description

A buffer overflow vulnerability in SonicOS allows a remote attacker to cause a Denial of Service (DoS) by sending a specially crafted request. This vulnerability affects SonicOS Gen5, Gen6, Gen7 platforms, and SonicOSv virtual firewalls.

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:o:sonicwall:sonicos:*:*:*:*:*:*:*:* 7.0.1-r1262 (including)
cpe:2.3:h:sonicwall:nsa_2650:-:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:nsa_2700:-:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:nsa_3650:-:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:nsa_3700:-:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:nsa_4650:-:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:nsa_4700:-:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:nsa_5650:-:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:nsa_6650:-:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:nsa_6700:-:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:nsa_9250:-:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:nsa_9450:-:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:nsa_9650:-:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:tz270:-:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:tz270w:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools