Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2020-8843 |
CWE-ID | CWE-287 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Istio Web applications / Other software |
Vendor | Istio |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU25386
Risk: Medium
CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-8843
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in Mixer policy checks. Istio-proxy accepts x-istio-attributes header at ingress that can be used to affect policy decisions when Mixer policy selectively applies to source equal to ingress. A remote attacker can bypass authentication process and gain unauthorized access to the application.
MitigationInstall updates from vendor's website.
Vulnerable software versionsIstio: 1.3 - 1.3.6
External linkshttp://github.com/istio/istio/commits/master
http://istio.io/news/security/
http://istio.io/news/security/istio-security-2020-002/
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.