Heap-based buffer overflow in SonicOS - CVE-2020-5138
Published: October 12, 2020 / Updated: October 16, 2020
Vulnerability identifier: #VU47687
CSH Severity: High
CVSS v4.0: 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:U/U:Amber
CVE-ID: CVE-2020-5138
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: SonicWall
Affected software:
SonicOS
SonicOS
Detailed vulnerability 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 SSLVPN service. A remote non-authenticated attacker can send specially crafted request to the device and crash it.
How to mitigate CVE-2020-5138
Install updates from vendor's website.