CVE-2021-34593 (GCVE-0-2021-34593)
Vulnerability from cvelistv5 – Published: 2021-10-26 09:55 – Updated: 2024-09-17 04:10
VLAI
EPSS
VEX
Title
CODESYS V2 runtime: unauthenticated invalid requests may result in denial-of-service
Summary
In CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56 unauthenticated crafted invalid requests may result in several denial-of-service conditions. Running PLC programs may be stopped, memory may be leaked, or further communication clients may be blocked from accessing the PLC.
Severity
7.5 (High)
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://customers.codesys.com/index.php?eID=dumpF… | x_refsource_CONFIRM |
| http://seclists.org/fulldisclosure/2021/Oct/64 | mailing-listx_refsource_FULLDISC |
| http://packetstormsecurity.com/files/164716/CODES… | x_refsource_MISC |
| http://packetstormsecurity.com/files/165874/WAGO-… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| CODESYS | CODESYS V2 |
Affected:
Runtime Toolkit 32 bit full , < V2.4.7.56
(custom)
Affected: PLCWinNT , < V2.4.7.56 (custom) |
guessed |
Date Public
2021-10-25 00:00
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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