CVE-2020-17408 XML external entity in ExpressCluster

What is CVE-2020-17408?

CVE-2020-17408 is a high-severity vulnerability in NEC ExpressCluster, published on 10 Sep 2020. 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 ExpressCluster 4.1. Authentication is not required to exploit this vulnerability. The specific flaw exists within the clpwebmc executable. Due to the improper restriction of XML External Entity (XXE) references, a specially-crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose information in the context of SYSTEM. Was ZDI-CAN-10801.

Weakness: CWE-611

Which versions are affected by CVE-2020-17408?

It affects 1 product.

Products include Nec Expresscluster X.

How do I fix CVE-2020-17408?

No fix has been published for CVE-2020-17408 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-17408 being exploited?

There is no known exploitation of CVE-2020-17408 in the wild and no public exploit code.

Other vulnerabilities in NEC ExpressCluster

• CVE-2022-34822 Path traversal in CLUSTERPRO X Critical 9.8
• CVE-2022-34823 Memory corruption in CLUSTERPRO X Critical 9.8
• CVE-2022-34824 Path traversal in CLUSTERPRO X Critical 9.8
• CVE-2022-34825 Path traversal in CLUSTERPRO X Critical 9.8
• CVE-2023-39544 Auth bypass in CLUSTERPRO X SingleServerSafe (EXPRESSCLUSTER X SingleServerSafe) High 8.8

Sources

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

Also known as GHSA-4ffh-54c8-m8qq.