Vulnerability identifier: #VU10773

Vulnerability risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-11430

CWE-ID: CWE-611

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OmniAuth
Client/Desktop applications / Other client software

Vendor: OmniAuth

Description
The vulnerability allows a remote attacker to perform XXE attack.

The vulnerability exists due to an implementation flaw in the SAML open-source library. A remote attacker can add or modify specially crafted XML data, modify digital signatures of user attribute data and impersonate a user or obtain potentially sensitive information.

Mitigation
Install update from vendor's website.

Vulnerable software versions

OmniAuth: SAML

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External links
http://github.com/omniauth/omniauth-saml

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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