XXE in Nec Expresscluster
CVE-2020-17408
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.
Vulnerability class: XXE (XML External Entity)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.713 (99.4th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.693 · newest: 0.713 · change: +0.020
Affected products
- Nec Expresscluster — versions 4.1
- Nec Expresscluster X — versions 4.1, 4.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.zerodayinitiative.com/advisories/ZDI-20-1102/ (VDB Entry, Third Party Advisory)
- www.support.nec.co.jp/en/View.aspx (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-17408?
- CVE-2020-17408 is a high-severity vulnerability in Nec Expresscluster, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2020-09-10.
- How severe is CVE-2020-17408?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-17408 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.