CVE Vulnerability

CVE-2018-7711

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.

6.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

8.1 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://simplesamlphp.org/security/201803-01 Vendor Advisory
https://github.com/simplesamlphp/saml2/commit/4f6af7f69f29df8555a18b9bb7b646906b45924d Patch
https://lists.debian.org/debian-lts-announce/2018/03/msg00017.html Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:simplesamlphp:simplesamlphp:*:*:*:*:*:*:*:*
cpe:2.3:a:simplesamlphp:saml2:*:*:*:*:*:*:*:*
cpe:2.3:a:simplesamlphp:saml2:*:*:*:*:*:*:*:*
cpe:2.3:a:simplesamlphp:saml2:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
Information

Published : 2018-03-05 10:29

Updated : 2018-03-29 03:24

NVD link : CVE-2018-7711

Mitre link : CVE-2018-7711

Products Affected
No products.
CWE
CWE-347

Improper Verification of Cryptographic Signature