CVE-2017-12871

The aesEncrypt method in lib/SimpleSAML/Utils/Crypto.php in SimpleSAMLphp 1.14.x through 1.14.11 makes it easier for context-dependent attackers to bypass the encryption protection mechanism by leveraging use of the first 16 bytes of the secret key as the initialization vector (IV).

CVSS v3 5.9 MEDIUM
CVSS v2.0 4.3 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

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

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://github.com/simplesamlphp/simplesamlphp/commit/77df6a932d46daa35e364925eb73a175010dc904	Issue Tracking Patch Third Party Advisory
https://simplesamlphp.org/security/201703-02	Issue Tracking Patch Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.0:::::::*
	cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.1:::::::*
	cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.2:::::::*
	cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.3:::::::*
	cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.4:::::::*
	cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.5:::::::*
	cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.6:::::::*
	cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.7:::::::*
	cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.8:::::::*
	cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.9:::::::*
	cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.10:::::::*
	cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.11:::::::*

History

No history.

Information

Published : 2017-09-01 21:29

Updated : 2023-12-10 12:15

NVD link : CVE-2017-12871

Mitre link : CVE-2017-12871

CVE.ORG link : CVE-2017-12871

JSON object : View

Products Affected

simplesamlphp

simplesamlphp

CWE

CWE-326

Inadequate Encryption Strength

{"id": "CVE-2017-12871", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.2}]}, "published": "2017-09-01T21:29:00.530", "references": [{"url": "https://github.com/simplesamlphp/simplesamlphp/commit/77df6a932d46daa35e364925eb73a175010dc904", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://simplesamlphp.org/security/201703-02", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-326"}]}], "descriptions": [{"lang": "en", "value": "The aesEncrypt method in lib/SimpleSAML/Utils/Crypto.php in SimpleSAMLphp 1.14.x through 1.14.11 makes it easier for context-dependent attackers to bypass the encryption protection mechanism by leveraging use of the first 16 bytes of the secret key as the initialization vector (IV)."}, {"lang": "es", "value": "El m\u00e9todo aesEncrypt en lib/SimpleSAML/Utils/Crypto.php en SimpleSAMLphp 1.14.x hasta la versi\u00f3n 1.14.11 facilita que los atacantes dependientes del contexto omitan el mecanismo de de protecci\u00f3n de cifrado aprovechando el uso de los primeros 16 bytes de la clave secreta como vector de inicializaci\u00f3n (IV)."}], "lastModified": "2017-09-06T01:36:03.500", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "18CCD17F-ABF0-468F-8675-9E5793FC3B9F"}, {"criteria": "cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "158D36D6-CE08-4DBB-A390-1D92242418CC"}, {"criteria": "cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CF3A50E0-F98C-4414-910F-31CD8A73AE46"}, {"criteria": "cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.3:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AC53A612-0089-4162-BC57-0FEC9BBE25C0"}, {"criteria": "cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.4:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "64D1B626-9458-4FA0-B3F6-C9882072B548"}, {"criteria": "cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.5:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F0138AEE-D6F3-4876-850A-F2F2727C54B7"}, {"criteria": "cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6FAC8D43-079D-4143-B44D-D30B0F0B53C3"}, {"criteria": "cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.7:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4396B3D7-8A38-44F3-AC91-3F2665DBE50F"}, {"criteria": "cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.8:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "647A1484-6E5D-4E2D-8853-B42B1BF73E72"}, {"criteria": "cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.9:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "47D19ADB-348C-48E0-8972-E0212664F84A"}, {"criteria": "cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.10:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7D01B211-1424-418B-BE1E-661A60CF27B9"}, {"criteria": "cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.11:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "35C9947E-FDC8-4C17-A4A0-10198555F9D5"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}