Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2017-12871

Severity CVSS v4.0:
Pending analysis
Type:
CWE-326 Inadequate Encryption Strength
Publication date:
01/09/2017
Last modified:
20/04/2025

Description

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).

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.90 MEDIUM
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x
5.90
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:M/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0
4.30
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
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:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools