The SimpleSAML_Auth_TimeLimitedToken class in SimpleSAMLphp 1.14.14 and earlier allows attackers with access to a secret token to extend its validity period by manipulating the prepended time offset.
Weakness
According to WASC, “Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization.”
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Simplesamlphp | Simplesamlphp | * | 1.14.14 (including) |
| Simplesamlphp | Ubuntu | esm-apps/xenial | * |
| Simplesamlphp | Ubuntu | trusty | * |
| Simplesamlphp | Ubuntu | upstream | * |
| Simplesamlphp | Ubuntu | xenial | * |
| Simplesamlphp | Ubuntu | zesty | * |
Potential Mitigations
References
- https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html
- https://simplesamlphp.org/security/201708-01
- https://www.debian.org/security/2018/dsa-4127
- https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html
- https://simplesamlphp.org/security/201708-01
- https://www.debian.org/security/2018/dsa-4127