GitHub Advisoryadvisory · Packagist
GHSA-j4qf-3w33-8cgc SimpleSAMLphp Signature validation bypass
HIGH
Official page ↗
- Aliases
- CVE-2017-18122
- Ecosystem
- Packagist
- Packages
- simplesamlphp/simplesamlphp
- Severity
- High
- CVSS vector
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-347
- Reviewed
- 2024-04-25
Affected packages
• Packagist simplesamlphp/simplesamlphp: < 1.14.17 → fixed in 1.14.17
Description
A signature-validation bypass issue was discovered in SimpleSAMLphp through 1.14.16. A SimpleSAMLphp Service Provider using SAML 1.1 will regard as valid any unsigned SAML response containing more than one signed assertion, provided that the signature of at least one of the assertions is valid. Attributes contained in all the assertions received will be merged and the entityID of the first assertion received will be used, allowing an attacker to impersonate any user of any IdP given an assertion signed by the targeted IdP.
Related
Alias · CVE (1)
- CVE-2017-18122 A signature-validation bypass issue was discovered in SimpleSAMLphp through 1.14.16. vulnerability
Weakness · CWE (1)
- CWE-347 Improper Verification of Cryptographic Signature weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2017-18122 advisory
- https://github.com/simplesamlphp/simplesamlphp/commit/e2d53086abbb253efb24ddcb49b116246eb0b6ca web
- https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2017-18122.yaml web
- https://github.com/simplesamlphp/simplesamlphp package
- https://lists.debian.org/debian-lts-announce/2018/02/msg00008.html web
- https://simplesamlphp.org/security/201710-01 web
- https://www.debian.org/security/2018/dsa-4127 web