CVSS 3.0
8.1 highCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2018-7711
High (8.1). EPSS 1.2% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 1.2% chance of exploitation in the next 30 days; higher than 67% of CVEs (scores of 2026-11-01)
- CWE
- CWE-347
- Published
- Modified
- Record from
- the NVD, synced
Affected
- debian:debian_linux
- simplesamlphp:saml2
- simplesamlphp:simplesamlphp
References
- https://github.com/simplesamlphp/saml2/commit/4f6af7f69f29df8555a18b9bb7b646906b45924d
- https://lists.debian.org/debian-lts-announce/2018/03/msg00017.html
- https://simplesamlphp.org/security/201803-01
- https://github.com/simplesamlphp/saml2/commit/4f6af7f69f29df8555a18b9bb7b646906b45924d
- https://lists.debian.org/debian-lts-announce/2018/03/msg00017.html