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CVE-2017-12871

Good to know:

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Date: September 1, 2017

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).

Language: PHP

Severity Score

Related Resources (6)

https://github.com/simplesamlphp/simplesamlphp/commit/77df6a932d46daa35e364925eb73a175010dc904
https://simplesamlphp.org/security/201703-02
https://people.canonical.com/~ubuntu-security/cve/CVE-2017-12871
https://nvd.nist.gov/vuln/detail/CVE-2017-12871
https://security-tracker.debian.org/tracker/CVE-2017-12871
https://www.mend.io/vulnerability-database/CVE-2017-12871

Severity Score

Weakness Type (CWE)

Inadequate Encryption Strength

CWE-326

Top Fix

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CVSS v3.1

Base Score:
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

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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