Improper Authentication in Istio



Published: 2020-02-17
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-8595
CWE-ID CWE-287
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Istio
Web applications / Other software

Vendor Istio

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Improper Authentication

EUVDB-ID: #VU25385

Risk: High

CVSSv3.1:

CVE-ID: CVE-2020-8595

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in the Authentication Policy exact-path matching logic. A remote attacker can bypass authentication process and gain unauthorized access to HTTP paths even if they are configured to be only accessed after presenting a valid JWT token.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Istio: 1.3 - 1.4.3


CPE2.3 External links

http://access.redhat.com/errata/RHSA-2020:0477
http://access.redhat.com/security/cve/cve-2020-8595
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-8595
http://github.com/istio/istio/commits/master
http://istio.io/news/security/
http://istio.io/news/security/istio-security-2020-001/

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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