CVE-2023-20236 (GCVE-0-2023-20236)
Vulnerability from cvelistv5 – Published: 2023-09-13 16:39 – Updated: 2025-12-16 18:23
VLAI
EPSS
VEX
Summary
A vulnerability in the iPXE boot function of Cisco IOS XR software could allow an authenticated, local attacker to install an unverified software image on an affected device.
This vulnerability is due to insufficient image verification. An attacker could exploit this vulnerability by manipulating the boot parameters for image verification during the iPXE boot process on an affected device. A successful exploit could allow the attacker to boot an unverified software image on the affected device.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2023-11-15 16:36 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Cisco | Cisco IOS XR Software |
Affected:
5.2.0
Affected: 5.2.1 Affected: 5.2.2 Affected: 5.2.4 Affected: 5.2.3 Affected: 5.2.5 Affected: 5.2.47 Affected: 5.3.0 Affected: 5.3.1 Affected: 5.3.2 Affected: 5.3.3 Affected: 5.3.4 Affected: 6.0.0 Affected: 6.0.1 Affected: 6.0.2 Affected: 6.1.1 Affected: 6.1.2 Affected: 6.1.3 Affected: 6.1.4 Affected: 6.1.12 Affected: 6.1.22 Affected: 6.1.32 Affected: 6.1.36 Affected: 6.1.42 Affected: 6.2.1 Affected: 6.2.2 Affected: 6.2.3 Affected: 6.2.25 Affected: 6.2.11 Affected: 6.3.2 Affected: 6.3.3 Affected: 6.3.15 Affected: 6.4.1 Affected: 6.4.2 Affected: 6.4.3 Affected: 6.5.1 Affected: 6.5.2 Affected: 6.5.3 Affected: 6.5.25 Affected: 6.5.26 Affected: 6.5.28 Affected: 6.5.29 Affected: 6.5.32 Affected: 6.5.33 Affected: 6.6.2 Affected: 6.6.3 Affected: 6.6.25 Affected: 6.6.4 Affected: 7.0.1 Affected: 7.0.2 Affected: 7.0.12 Affected: 7.0.14 Affected: 7.1.1 Affected: 7.1.15 Affected: 7.1.2 Affected: 7.1.3 Affected: 6.7.1 Affected: 6.7.2 Affected: 6.7.3 Affected: 6.7.4 Affected: 7.2.0 Affected: 7.2.1 Affected: 7.2.2 Affected: 7.3.1 Affected: 7.3.15 Affected: 7.3.2 Affected: 7.3.3 Affected: 7.3.5 Affected: 7.4.1 Affected: 7.4.2 Affected: 6.8.1 Affected: 6.8.2 Affected: 7.5.1 Affected: 7.5.3 Affected: 7.5.2 Affected: 7.5.4 Affected: 7.6.1 Affected: 7.6.2 Affected: 7.7.1 Affected: 7.7.2 Affected: 7.7.21 Affected: 6.9.1 Affected: 6.9.2 Affected: 7.8.1 Affected: 7.8.2 Affected: 7.9.1 Affected: 7.9.2 |
guessed | |
| cisco | ios_xr_software |
Affected:
0 , ≤ 7.9.2
(custom)
cpe:2.3:o:cisco:ios_xr_software:*:*:*:*:*:*:*:* |
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"value": "Una vulnerabilidad en la funci\u00f3n de arranque iPXE del software Cisco IOS XR podr\u00eda permitir que un atacante local autenticado instale una imagen de software no verificada en un dispositivo afectado. Esta vulnerabilidad se debe a una verificaci\u00f3n de imagen insuficiente. Un atacante podr\u00eda aprovechar esta vulnerabilidad manipulando los par\u00e1metros de arranque para la verificaci\u00f3n de im\u00e1genes durante el proceso de arranque iPXE en un dispositivo afectado. Una explotaci\u00f3n exitosa podr\u00eda permitir al atacante iniciar una imagen de software no verificada en el dispositivo afectado."
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],
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}
],
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}
}
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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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