CVE-2017-12872
SimpleSAMLphp allows timing side-channel attacks
5.9
MEDIUM
CVSS 3.1
EPSS 0.40%
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.
How to fix CVE-2017-12872
To remediate CVE-2017-12872, upgrade the affected package to a fixed version below.
- —upgrade to 1.14.15-1 or later
- —upgrade to 1.15.0-rc1 or later
Is CVE-2017-12872 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.14.15-1
- from 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)
- ADVISORYnvd.nist.gov/vuln/detail/CVE-2017-12872
- ADVISORYsecurity-tracker.debian.org/tracker/CVE-2017-12872
- WEBgithub.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2017-12872.yaml
- WEBgithub.com/simplesamlphp/simplesamlphp/commit/b72c79e3070f930d758f5c269333d63ed7509e2e