CVE-2018-7711

Severity Score

8.1

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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 retorno en las utilidades de validación de firma. Esto permite que un atacante haga que firmas no válidas se acepten como válidas forzando un error durante la validación. Esto ocurre debido a la dependencia en una funcionalidad de PHP que interpreta un código de error -1 como valor boleano true.

*Credits: N/A

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

2018-03-05 CVE Reserved
2018-03-05 CVE Published
2023-07-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-347: Improper Verification of Cryptographic Signature

CAPEC

References (3)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2018/03/msg00017.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://github.com/simplesamlphp/saml2/commit/4f6af7f69f29df8555a18b9bb7b646906b45924d	2018-03-29

URL	Date	SRC
https://simplesamlphp.org/security/201803-01	2018-03-29

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"				< 1.15.4 Search vendor "Simplesamlphp" for product "Simplesamlphp" and version " < 1.15.4"		-		Affected
Simplesamlphp Search vendor "Simplesamlphp"		Saml2 Search vendor "Simplesamlphp" for product "Saml2"				>= 1.0.0 < 1.10.6 Search vendor "Simplesamlphp" for product "Saml2" and version " >= 1.0.0 < 1.10.6"		-		Affected
Simplesamlphp Search vendor "Simplesamlphp"		Saml2 Search vendor "Simplesamlphp" for product "Saml2"				>= 2.0.0 < 2.3.8 Search vendor "Simplesamlphp" for product "Saml2" and version " >= 2.0.0 < 2.3.8"		-		Affected
Simplesamlphp Search vendor "Simplesamlphp"		Saml2 Search vendor "Simplesamlphp" for product "Saml2"				>= 3.0.0 < 3.1.4 Search vendor "Simplesamlphp" for product "Saml2" and version " >= 3.0.0 < 3.1.4"		-		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