Vulnerability-Lookup

GHSA-5H27-5X9J-FFPX

Vulnerability from github – Published: 2025-08-29 12:31 – Updated: 2025-08-29 12:31

Details

Erroneously using an all-zero seed for RSA-OEAP padding instead of the generated random bytes, in Oberon microsystems AG’s Oberon PSA Crypto library in all versions up to 1.5.1, results in deterministic RSA and thus in a loss of confidentiality for guessable messages, recognition of repeated messages, and loss of security proofs.

Severity

2.3 (Low)


                  
                    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/S:N/RE:L

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{
  "affected": [],
  "aliases": [
    "CVE-2025-9071"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-780"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-29T10:15:33Z",
    "severity": "LOW"
  },
  "details": "Erroneously using an all-zero seed for RSA-OEAP padding instead of the generated random bytes, in Oberon microsystems AG\u2019s Oberon PSA Crypto library in all versions up to 1.5.1, results in deterministic RSA and thus in a loss of confidentiality for guessable messages, recognition of repeated messages, and loss of security proofs.",
  "id": "GHSA-5h27-5x9j-ffpx",
  "modified": "2025-08-29T12:31:12Z",
  "published": "2025-08-29T12:31:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-9071"
    },
    {
      "type": "WEB",
      "url": "https://www.oberon.ch/security-advisories/cve-2025-9071"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:X/R:X/V:X/RE:L/U:X",
      "type": "CVSS_V4"
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}

CVE-2025-9071 (GCVE-0-2025-9071)

Vulnerability from cvelistv5 – Published: 2025-08-29 09:19 – Updated: 2025-08-29 13:45

Title

Insecure RSA-OAEP implementation with all-zero seed for padding in Oberon PSA Crypto

Summary

Severity

2.3 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/S:N/RE:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-08-29 13:45 UTC

CWE

CWE-780 - Use of RSA Algorithm without OEAP

Assigner

NCSC.ch CNA under the mitre root

CNA scorecard B 80/100 over 74 records in the last 180 days details

References

1 reference

URL	Tags
https://www.oberon.ch/security-advisories/cve-202…

Impacted products

1 product

Vendor	Product	Version
Oberon microsystems AG	Oberon PSA Crypto	Affected: 1.0.0 , ≤ 1.5.1 (custom)

Credits

Nordic Semiconductor ASA

Show details on NVD website

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        "metrics": [
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            "other": {
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                "id": "CVE-2025-9071",
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                  },
                  {
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-08-29T13:45:26.977528Z",
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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.

Vulnerability timeline

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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.
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