Multiple vulnerabilities in SonicWall SonicOS

Published: 2023-03-02 | Updated: 2024-01-18

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-1101 CVE-2023-0656
CWE-ID	CWE-287 CWE-121
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #2 is available.
Vulnerable software	SonicOS Operating systems & Components / Operating system
Vendor	SonicWall

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper Authentication

EUVDB-ID: #VU72721

Risk: Medium

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-1101

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote user to bypass 2FA authentication process.

The vulnerability exists due to improper restriction of excessive MFA attempts in SonicOS SSLVPN. A remote user can bypass 2FA authentication process and gain unauthorized access to the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SonicOS: 6.5 - 7.0.1.0-5051-1511

CPE2.3

External links

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0005

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Stack-based buffer overflow

EUVDB-ID: #VU72720

Risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2023-0656

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the web management interface of SonicWall FireWalls. A remote unauthenticated attacker can send specially crafted request to the system, trigger a stack-based buffer overflow and perform a denial of service (DoS) attack.