SonicWALL GMS Virtual Appliance HttpDigestAuthenticator Authentication Bypass Vulnerability

2023-08-2100:00:00

Alex Birnberg of Zymo Security

www.zerodayinitiative.com

sonicwall

gms

virtual appliance

httpdigestauthenticator

authentication bypass

vulnerability

remote attackers

predictable digest credential

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.034 Low

EPSS

Percentile

91.4%

JSON

This vulnerability allows remote attackers to bypass authentication on affected installations of SonicWALL GMS Virtual Appliance. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HttpDigestAuthenticator class. The issue results from a predictable digest credential in the authentication mechanism. An attacker can leverage this vulnerability to bypass authentication on the system.