CVE-2020-5131 Path traversal in SonicWall NetExtender

What is CVE-2020-5131?

CVE-2020-5131 is a high-severity path traversal vulnerability in SonicWall NetExtender, published on 17 Jul 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

SonicWall NetExtender Windows client vulnerable to arbitrary file write vulnerability, this allows attacker to overwrite a DLL and execute code with the same privilege in the host operating system. This vulnerability impact SonicWall NetExtender Windows client version 9.0.815 and earlier.

Weakness: CWE-20

Which versions are affected by CVE-2020-5131?

It affects 1 product.

Products include Sonicwall Netextender.

How do I fix CVE-2020-5131?

No fix has been published for CVE-2020-5131 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2020-5131 being exploited?

There is no known exploitation of CVE-2020-5131 in the wild and no public exploit code.

Other vulnerabilities in SonicWall NetExtender

• CVE-2023-44218 Privilege escalation in NetExtender High 8.8
• CVE-2023-44217 Privilege escalation in NetExtender High 7.8
• CVE-2022-22281 Memory corruption in SonicWall NetExtender Windows (32 and 64 bit) Client High 7.8
• CVE-2023-44220 Other in NetExtender High 7.3
• CVE-2024-29014 Code injection in NetExtender High 7.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-cw48-h2hv-c97j.