CVE-2017-12870

MEDIUM5.9EPSS 0.26%

SimpleSAMLphp Unauthenticated encryption in CBC mode

Published: 5/17/2022Modified: 4/28/2026

Also known as:GHSA-44pr-mgcp-v36rDEBIAN-CVE-2017-12870

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.

Affected packages (2)

Debian/simplesamlphpfrom 0, < 1.14.15-1
Packagist/simplesamlphp/simplesamlphpfrom 0, < 1.14.13

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM5.9	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References (6)

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2017-12870
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2017-12870
PATCHhttps://github.com/simplesamlphp/simplesamlphp
WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2017-12870.yaml
WEBhttps://github.com/simplesamlphp/simplesamlphp/commit/4c939be1696bacb2b95ee11d4ebc5814a08b04c5
WEBhttps://simplesamlphp.org/security/201704-01