SB2023030249 - Multiple vulnerabilities in SonicWall SonicOS

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Improper Authentication (CVE-ID: CVE-2023-1101)

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.

2) Stack-based buffer overflow (CVE-ID: CVE-2023-0656)

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.

Remediation

Install update from vendor's website.

References

• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0005
• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0004
• https://ssd-disclosure.com/ssd-advisory-sonicwall-ssl-vpn-out-of-bounds-write-dos