VULNERABILITY INTELLIGENCE

CVE-2018-7711

CVSS score8.1 HIGH
EPSS probability1.19%
CISA KEVNot currently listed
Published2018-03-05
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

HTTPRedirect.php in the saml2 library in SimpleSAMLphp before 1.15.4 has an incorrect check of return values in the signature validation utilities, allowing an attacker to get invalid signatures accepted as valid by forcing an error during validation. This occurs because of a dependency on PHP functionality that interprets a -1 error code as a true boolean value.

Weakness classification

  • nvd@nist.gov: CWE-347

Primary references