CVSS: 8.6EPSS: 0%CPEs: 2EXPL: 0CVE-2025-27773 – SimpleSAMLphp SAML2 library has incorrect signature verification for HTTP-Redirect binding
https://notcve.org/view.php?id=CVE-2025-27773
11 Mar 2025 — The SimpleSAMLphp SAML2 library is a PHP library for SAML2 related functionality. Prior to versions 4.17.0 and 5.0.0-alpha.20, there is a signature confusion attack in the HTTPRedirect binding. An attacker with any signed SAMLResponse via the HTTP-Redirect binding can cause the application to accept an unsigned message. Versions 4.17.0 and 5.0.0-alpha.20 contain a fix for the issue. • https://github.com/simplesamlphp/saml2/blob/9545abd0d9d48388f2fa00469c5c1e0294f0303e/src/SAML2/HTTPRedirect.php#L104-L113 • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 8.3EPSS: 0%CPEs: 2EXPL: 0CVE-2024-52806 – SimpleSAMLphp SAML2 has an XXE in parsing SAML messages
https://notcve.org/view.php?id=CVE-2024-52806
02 Dec 2024 — SimpleSAMLphp SAML2 library is a PHP library for SAML2 related functionality. When loading an (untrusted) XML document, for example the SAMLResponse, it's possible to induce an XXE. This vulnerability is fixed in 4.6.14 and 5.0.0-alpha.18. La librería SAML2 SimpleSAMLphp es una librería PHP para funciones relacionadas con SAML2. Al cargar un documento XML (no confiable), por ejemplo, SAMLResponse, es posible inducir un XXE. • https://github.com/simplesamlphp/saml2/commit/5fd4ce4596656fb0c1278f15b8305825412e89f7 • CWE-611: Improper Restriction of XML External Entity Reference •
CVSS: 7.8EPSS: 0%CPEs: 2EXPL: 0CVE-2023-41890 – Sustainsys.Saml2 Insufficient Identity Provider Issuer Validation
https://notcve.org/view.php?id=CVE-2023-41890
19 Sep 2023 — Sustainsys.Saml2 library adds SAML2P support to ASP.NET web sites, allowing the web site to act as a SAML2 Service Provider. Prior to versions 1.0.3 and 2.9.2, when a response is processed, the issuer of the Identity Provider is not sufficiently validated. This could allow a malicious identity provider to craft a Saml2 response that is processed as if issued by another identity provider. It is also possible for a malicious end user to cause stored state intended for one identity provider to be used when pro... • https://github.com/Sustainsys/Saml2/issues/712 • CWE-289: Authentication Bypass by Alternate Name CWE-294: Authentication Bypass by Capture-replay •
CVSS: 7.3EPSS: 0%CPEs: 2EXPL: 0CVE-2020-5268 – Subject Confirmation Method not validated in Saml2 Authentication Services for ASP.NET
https://notcve.org/view.php?id=CVE-2020-5268
21 Apr 2020 — In Saml2 Authentication Services for ASP.NET versions before 1.0.2, and between 2.0.0 and 2.6.0, there is a vulnerability in how tokens are validated in some cases. Saml2 tokens are usually used as bearer tokens - a caller that presents a token is assumed to be the subject of the token. There is also support in the Saml2 protocol for issuing tokens that is tied to a subject through other means, e.g. holder-of-key where possession of a private key must be proved. The Sustainsys.Saml2 library incorrectly trea... • https://github.com/Sustainsys/Saml2/commit/e58e0a1aff2b1ead6aca080b7cdced55ee6d5241 • CWE-287: Improper Authentication CWE-303: Incorrect Implementation of Authentication Algorithm •
CVSS: 8.2EPSS: 0%CPEs: 1EXPL: 0CVE-2020-5261 – Missing Token Replay Detection
https://notcve.org/view.php?id=CVE-2020-5261
25 Mar 2020 — Saml2 Authentication services for ASP.NET (NuGet package Sustainsys.Saml2) greater than 2.0.0, and less than version 2.5.0 has a faulty implementation of Token Replay Detection. Token Replay Detection is an important defence in depth measure for Single Sign On solutions. The 2.5.0 version is patched. Note that version 1.0.1 is not affected. It has a correct Token Replay Implementation and is safe to use. • https://github.com/Sustainsys/Saml2/commit/e58e0a1aff2b1ead6aca080b7cdced55ee6d5241 • CWE-294: Authentication Bypass by Capture-replay •
CVSS: 8.1EPSS: 0%CPEs: 5EXPL: 0CVE-2018-7711
https://notcve.org/view.php?id=CVE-2018-7711
05 Mar 2018 — 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. HTTPRedirect.php en la biblioteca saml2 en SimpleSAMLphp, en versiones anteriores a la 1.15.4, tiene una comprobación incorrecta de valores de ret... • https://github.com/simplesamlphp/saml2/commit/4f6af7f69f29df8555a18b9bb7b646906b45924d • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 7.5EPSS: 0%CPEs: 5EXPL: 0CVE-2018-6519 – Debian Security Advisory 4127-1
https://notcve.org/view.php?id=CVE-2018-6519
02 Feb 2018 — The SAML2 library before 1.10.4, 2.x before 2.3.5, and 3.x before 3.1.1 in SimpleSAMLphp has a Regular Expression Denial of Service vulnerability for fraction-of-seconds data in a timestamp. La librería SAML2 en versiones 1.10.4, 2.x anteriores a la 2.3.5 y 3.x anteriores a la 3.1.1 en SimpleSAMLphp tiene una vulnerabilidad de denegación de servicio por expresión regular para los datos en fracciones de segundo en una marca de tiempo. Several vulnerabilities have been discovered in SimpleSAMLphp, a framework... • https://simplesamlphp.org/security/201801-01 • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') •
CVSS: 9.1EPSS: 0%CPEs: 13EXPL: 0CVE-2016-9814
https://notcve.org/view.php?id=CVE-2016-9814
16 Feb 2017 — The validateSignature method in the SAML2\Utils class in SimpleSAMLphp before 1.14.10 and simplesamlphp/saml2 library before 1.9.1, 1.10.x before 1.10.3, and 2.x before 2.3.3 allows remote attackers to spoof SAML responses or possibly cause a denial of service (memory consumption) by leveraging improper conversion of return values to boolean. El método validateSignature en la clase SAML2\Utils en SimpleSAMLphp en versiones anteriores a 1.14.10 y la librería simplesamlphp/saml2 en versiones anteriores a 1.9.... • http://www.securityfocus.com/bid/94730 • CWE-399: Resource Management Errors •