// For flags

CVE-2017-18122

 

Severity Score

8.1
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se ha descubierto un problema de omisión de validación de firmas en SimpleSAMLphp hasta la versión 1.14.16. Un proveedor de servicios SimpleSAMLphp que emplee SAML 1.1 considerará como válida cualquier respuesta SAML que contenga más de una aserción válida, siempre y cuando la firma de, al menos, una de las aserciones sea válida. Los atributos contenidos en todas las aserciones recibidas se fusionarán y se empleará el entityID de la primera aserción recibida. Esto permite que un atacante suplante cualquier usuario de cualquier IdP si tiene una aserción firmada por el IdP objetivo.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-02-02 CVE Reserved
  • 2018-02-02 CVE Published
  • 2023-08-05 EPSS Updated
  • 2024-08-05 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-347: Improper Verification of Cryptographic Signature
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Simplesamlphp
Search vendor "Simplesamlphp"
 Simplesamlphp
Search vendor "Simplesamlphp" for product "Simplesamlphp"
 <= 1.14.16
Search vendor "Simplesamlphp" for product "Simplesamlphp" and version " <= 1.14.16"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 7.0
Search vendor "Debian" for product "Debian Linux" and version "7.0"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 8.0
Search vendor "Debian" for product "Debian Linux" and version "8.0"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 9.0
Search vendor "Debian" for product "Debian Linux" and version "9.0"
-
Affected