CVE-2020-27859 Path traversal in ESMPRO Manager

High 7.5 Published Updated

Remote attackers can disclose sensitive information via path traversal in NEC ESMPRO Manager without authentication.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-27859?

CVE-2020-27859 is a high-severity path traversal vulnerability in NEC ESMPRO Manager, published on 20 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

This vulnerability allows remote attackers to disclose sensitive information on affected installations of NEC ESMPRO Manager 6.42. Authentication is not required to exploit this vulnerability. The specific flaw exists within the GetEuaLogDownloadAction class. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose information in the context of SYSTEM. Was ZDI-CAN-9607.

Weakness: CWE-22

Which versions are affected by CVE-2020-27859?

It affects 1 product.

Products include Nec Esmpro Manager.

How do I fix CVE-2020-27859?

No fix has been published for CVE-2020-27859 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-2020-27859 being exploited?

There is no known exploitation of CVE-2020-27859 in the wild and no public exploit code.

Sources

Also known as GHSA-w9gf-29cq-m7g8.

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