Web Designer for BMXNOR0200H: Improper Restriction of XML External Entity Reference
CVE-2024-12476 is a high-severity improper restriction of XML external entity reference vulnerability in Web Designer for BMXNOR0200H from Schneider Electric, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. Affected Web Designer for BMXNOR0200H versions: All versions. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.28% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Web Designer for BMXNOR0200H you run against the affected versions below, and install the vendor's latest release.
- Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Schneider Electric | Web Designer for BMXNOR0200H | All versions | Not stated |
| Schneider Electric | Web Designer for BMXNOE0110(H) | All versions | Not stated |
| Schneider Electric | Web Designer for BMENOC0311(C) | All Versions | Not stated |
| Schneider Electric | Web Designer for BMENOC0321(C) | All Versions | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- RequiredA user must take an action such as opening a file or link.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by CNA (se.com).
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 8.4 | High | CNA (se.com) |
| CVSS 3.1 | 7.8 | High | CNA (se.com) |
Official description
CWE-611: Improper Restriction of XML External Entity Reference vulnerability exists that could cause information disclosure, impacts workstation integrity and potential remote code execution on the compromised computer, when specific crafted XML file is imported in the Web Designer configuration tool.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Restriction of XML External Entity Reference
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
How developers prevent this class of flaw
- Many XML parsers and validators can be configured to disable external entity expansion.
More Improper Restriction of XML External Entity Reference vulnerabilities (CWE-611)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
Recent Improper Restriction of XML External Entity Reference vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.1 High severity
- 7.2 High severity
- 9.1 Critical severity
- 8.6 High severity
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