github - ghsa-wq2x-6c88-jrh3

GHSA-WQ2X-6C88-JRH3

Vulnerability from github – Published: 2025-11-22 00:31 – Updated: 2025-12-03 21:31

Details

Improper input validation in the TLS 1.3 CertificateVerify signature algorithm negotiation in wolfSSL 5.8.2 and earlier on multiple platforms allows for downgrading the signature algorithm used. For example when a client sends ECDSA P521 as the supported signature algorithm the server previously could respond as ECDSA P256 being the accepted signature algorithm and the connection would continue with using ECDSA P256, if the client supports ECDSA P256.

Severity ?

2.7 (Low)


                  
                    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

2.1 (Low)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-11934"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-21T23:15:44Z",
    "severity": "LOW"
  },
  "details": "Improper input validation in the TLS 1.3 CertificateVerify signature algorithm negotiation in wolfSSL 5.8.2 and earlier on multiple platforms allows for downgrading the signature algorithm used. For example when a client sends ECDSA P521 as the supported signature algorithm the server previously could respond as ECDSA P256 being the accepted signature algorithm and the connection would continue with using ECDSA P256, if the client supports ECDSA P256.",
  "id": "GHSA-wq2x-6c88-jrh3",
  "modified": "2025-12-03T21:31:01Z",
  "published": "2025-11-22T00:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11934"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wolfSSL/wolfssl/pull/9113"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wolfSSL/wolfssl"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/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:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2025-11934 (GCVE-0-2025-11934)

Vulnerability from cvelistv5 – Published: 2025-11-21 22:12 – Updated: 2025-11-24 18:00

Summary

Severity ?

2.1 (Low)


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

CWE

CWE-20 - Improper Input Validation

Assigner

wolfSSL

References

URL

Tags

	https://github.com/wolfSSL/wolfssl
	https://github.com/wolfSSL/wolfssl/pull/9113

Impacted products

	Vendor	Product	Version
	wolfSSL	wolfSSL	Affected: v5.8.2

Credits

Jaehun Lee, Pohang University of Science and Technology (POSTECH) Kyungmin Bae, Pohang University of Science and Technology (POSTECH)

Show details on NVD website

JSON

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                  },
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                "role": "CISA Coordinator",
                "timestamp": "2025-11-24T16:22:47.075514Z",
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Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-WQ2X-6C88-JRH3

CVE-2025-11934 (GCVE-0-2025-11934)

Tags

Sightings

Nomenclature