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SimpleSAMLphp Incorrect IV generation for encryption

Moderate severity GitHub Reviewed Published May 17, 2022 to the GitHub Advisory Database • Updated Apr 25, 2024

Package

composer simplesamlphp/simplesamlphp (Composer)

Affected versions

>= 1.14.0, < 1.14.12

Patched versions

1.14.12

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).

References

Published by the National Vulnerability Database Sep 1, 2017
Published to the GitHub Advisory Database May 17, 2022
Reviewed Apr 25, 2024
Last updated Apr 25, 2024

Severity

Moderate
5.9
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses

CVE ID

CVE-2017-12871

GHSA ID

GHSA-ww3w-592j-5qrw

Source code

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