CVE-2017-12872

MEDIUM5.9EPSS 0.40%

SimpleSAMLphp allows timing side-channel attacks

Published: 5/14/2022Modified: 4/28/2026

Also known as:GHSA-v882-949x-6v28DEBIAN-CVE-2017-12872

Description

The (1) Htpasswd authentication source in the authcrypt module and (2) SimpleSAML_Session class in SimpleSAMLphp 1.14.11 and earlier allow remote attackers to conduct timing side-channel attacks by leveraging use of the standard comparison operator to compare secret material against user input.

Affected packages (2)

Debian/simplesamlphpfrom 0, < 1.14.15-1
Packagist/simplesamlphp/simplesamlphpfrom 0, < 1.15.0-rc1

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 (7)

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2017-12872
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2017-12872
WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2017-12872.yaml
WEBhttps://github.com/simplesamlphp/simplesamlphp/commit/b72c79e3070f930d758f5c269333d63ed7509e2e
WEBhttps://lists.debian.org/debian-lts-announce/2017/12/msg00007.html
WEBhttps://lists.debian.org/debian-lts-announce/2018/06/msg00017.html
WEBhttps://simplesamlphp.org/security/201703-01