Skip to content

SimpleSAMLphp Unauthenticated encryption in CBC mode

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

Package

composer simplesamlphp/simplesamlphp (Composer)

Affected versions

< 1.14.13

Patched versions

1.14.13

Description

SimpleSAMLphp 1.14.12 and earlier make it easier for man-in-the-middle attackers to obtain sensitive information by leveraging use of the aesEncrypt and aesDecrypt methods in the SimpleSAML/Utils/Crypto class to protect session identifiers in replies to non-HTTPS service providers.

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

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS score

0.128%
(48th percentile)

Weaknesses

CVE ID

CVE-2017-12870

GHSA ID

GHSA-44pr-mgcp-v36r

Source code

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.