Reachable Assertion in SimpleSAMLphp and XMLSecLibs - CVE-2019-3465
Published: November 7, 2019
Vulnerability identifier: #VU22596
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-3465
CWE-ID: CWE-617
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: SimpleSAMLphp
Rob Richards
Rob Richards
Affected software:
SimpleSAMLphp
XMLSecLibs
SimpleSAMLphp
XMLSecLibs
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass authentication.
The vulnerability exists due to an assertion failure when processing signatures, related to XPath expression "./secdsig:SignedInfo/secdsig:Reference". A remote attacker with ability to retrieve IdP can impersonate any user i the application.
Successful exploitation of the vulnerability may allow an attacker to gain access to sensitive information or compromise the affected application.
How to mitigate CVE-2019-3465
Install updates from vendor's website.