#VU54315 Memory leak in SonicOS - CVE-2021-20019

Vulnerability identifier: #VU54315

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-20019

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SonicOS
Operating systems & Components / Operating system

Vendor: SonicWall

Description
The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due memory leak when processing HTTP requests. A remote attacker can force the application to leak memory and gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SonicOS: 6.0.5.3-94o - 7.0.1-R1036

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External links
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0006

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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