Arbitrary user impersonation in SimpleSAMLphp and XMLSecLibs



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-3465
CWE-ID CWE-617
Exploitation vector Network
Public exploit N/A
Vulnerable software
 SimpleSAMLphp
Web applications / Other software

XMLSecLibs
Universal components / Libraries / Libraries used by multiple products

Vendor SimpleSAMLphp
Rob Richards

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Reachable Assertion

EUVDB-ID: #VU22596

Risk: Medium

CVSSv4.0: 1.3 [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 - Reachable Assertion

Exploit availability: No

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SimpleSAMLphp: 1.12.0 - 1.17.6

XMLSecLibs: 1.3.2 - 3.0.3

CPE2.3 External links

https://simplesamlphp.org/security/201911-01


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



###SIDEBAR###