high8.1
CVE-2018-7711
SimpleSAMLphp saml2 incorrect signature validation
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | simplesamlphp/saml2 | < 1.10.6 | 1.10.6 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Simplesamlphp | Simplesamlphp | before 1.15.4 |
| Simplesamlphp | Saml2 | from 1.0.0 before 1.10.6 from 2.0.0 before 2.3.8 from 3.0.0 before 3.1.4 |
| Debian | Debian Linux | Version 7.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- 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/advisories/GHSA-g888-g2pp-82hf
- https://nvd.nist.gov/vuln/detail/CVE-2018-7711
- https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/saml2/CVE-2018-7711.yaml