GENESIS64: Deserialization of Untrusted Data
CVE-2022-33320 is a high-severity deserialization of untrusted data vulnerability in GENESIS64 from Mitsubishi 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 GENESIS64 versions: Versions 10.97 to 10.97.1. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.46% 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 GENESIS64 you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on mitsubishielectric.com for workarounds and exact fixed builds.
- 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 |
|---|---|---|---|
| Mitsubishi Electric | GENESIS64 | Versions 10.97 to 10.97.1 | Not stated |
| Mitsubishi Electric Iconics Digital Solutions | GENESIS64 | Versions 10.97 to 10.97.1 | Not stated |
| Mitsubishi Electric | ICONICS Suite | Versions 10.97 to 10.97.1 | Not stated |
| Mitsubishi Electric Iconics Digital Solutions | ICONICS Suite | Versions 10.97 to 10.97.1 | Not stated |
| Mitsubishi Electric | MC Works64 | Versions 4.04E and prior | 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 NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | CNA (yd.MitsubishiElectric.co.jp) |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
Deserialization of Untrusted Data vulnerability in Mitsubishi Electric GENESIS64 versions 10.97 to 10.97.1, Mitsubishi Electric Iconics Digital Solutions GENESIS64 versions 10.97 to 10.97.1, Mitsubishi Electric ICONICS Suite versions 10.97 to 10.97.1, Mitsubishi Electric Iconics Digital Solutions ICONICS Suite versions 10.97 to 10.97.1, and Mitsubishi Electric MC Works64 versions 4.04E and prior allows an unauthenticated attacker to execute an arbitrary malicious code by leading a user to load a project configuration file including malicious XML codes.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
How developers prevent this class of flaw
- If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
- When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
- Explicitly define a final object() to prevent deserialization.
More Deserialization of Untrusted Data vulnerabilities (CWE-502)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Advisories
- mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-008_en.pdfThird Party Advisory
Third-party and government advisories
- jvn.jp/vu/JVNVU96480474/index.htmlThird Party Advisory
Other references
Other vulnerabilities in GENESIS64
- 9.4 Critical severity
- 7.1 High severity
- 9.2 Critical severity
- 9.3 Critical severity
- 9.3 Critical severity
- 8.2 High severity
Recent Deserialization of Untrusted Data vulnerabilities
- 9.8 Critical severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 9.8 Critical severity
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