CVE-2016-6886

The pstm_reverse function in MatrixSSL before 3.8.4 allows remote attackers to cause a denial of service (invalid memory read and crash) via a (1) zero value or (2) the key's modulus for the secret key during RSA key exchange.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

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

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://www.matrixssl.org/blog/releases/matrixssl_3_8_4	Patch Vendor Advisory
http://www.securityfocus.com/bid/92604
https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html	Third Party Advisory
http://www.matrixssl.org/blog/releases/matrixssl_3_8_4	Patch Vendor Advisory
http://www.securityfocus.com/bid/92604
https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:matrixssl:matrixssl:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2017-01-13 16:59

Updated : 2025-04-20 01:37

NVD link : CVE-2016-6886

Mitre link : CVE-2016-6886

CVE.ORG link : CVE-2016-6886

JSON object : View

Products Affected

matrixssl

matrixssl

CWE

CWE-320

Key Management Errors

{"id": "CVE-2016-6886", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2017-01-13T16:59:00.247", "references": [{"url": "http://www.matrixssl.org/blog/releases/matrixssl_3_8_4", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.securityfocus.com/bid/92604", "source": "cve@mitre.org"}, {"url": "https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.matrixssl.org/blog/releases/matrixssl_3_8_4", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.securityfocus.com/bid/92604", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-320"}]}], "descriptions": [{"lang": "en", "value": "The pstm_reverse function in MatrixSSL before 3.8.4 allows remote attackers to cause a denial of service (invalid memory read and crash) via a (1) zero value or (2) the key's modulus for the secret key during RSA key exchange."}, {"lang": "es", "value": "La funci\u00f3n pstm_reverse en MatrixSSL en versiones anteriores a 3.8.4 permite a atacantes remotos provocar una denegaci\u00f3n de servicio (lectura de memoria no v\u00e1lida y ca\u00edda) a trav\u00e9s de un (1) valor cero o (2) los m\u00f3dulos de teclas para la clave secreta durante el intercambio de clave RSA."}], "lastModified": "2025-04-20T01:37:25.860", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:matrixssl:matrixssl:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6760E082-97B5-4186-9857-84003E6F0A60", "versionEndIncluding": "3.8.3"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}