SB2022010525 - Multiple vulnerabilities in SonicWall SonicOS

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Stack-based buffer overflow (CVE-ID: CVE-2021-20048)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing SessionID HTTP response header. A remote unauthenticated attacker can send a specially HTTP response, trigger a stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Stack-based buffer overflow (CVE-ID: CVE-2021-20046)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when when processing HTTP Content-Length response header. A remote unauthenticated attacker can send a specially crafted HTTP response, trigger a stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0028
• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0027