CVE-2020-16844
Last modified
CVE-2020-16844 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.. EPSS estimates a 1.09% chance of exploitation in the next 30 days.
Description
In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.
Metrics
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Istio | Istio | >= 1.5.0, <= 1.5.8 |
| Istio | Istio | >= 1.6.0, <= 1.6.7 |
References
- https://github.com/istio/istio/releasesVendor Advisory
- https://istio.io/latest/news/security/istio-security-2020-009/Exploit, Mitigation, Vendor Advisory
- https://github.com/istio/istio/releasesVendor Advisory
- https://istio.io/latest/news/security/istio-security-2020-009/Exploit, Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-16844?
How severe is CVE-2020-16844?
How do I fix CVE-2020-16844?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-16834Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2020-16835Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2020-16836Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2020-16839On Crestron DM-NVX-DIR, DM-NVX-DIR80, and DM-NVX-ENT devices…7.5
- CVE-2020-1684On Juniper Networks SRX Series configured with application i…7.5
- CVE-2020-16843In Firecracker 0.20.x before 0.20.1 and 0.21.x before 0.21.2…5.9
- CVE-2020-16845Go before 1.13.15 and 14.x before 1.14.7 can have an infinit…7.5
- CVE-2020-16846An issue was discovered in SaltStack Salt through 3002. Send…9.8
- CVE-2020-16847Extreme Analytics in Extreme Management Center before 8.5.0.…6.1
- CVE-2020-16849An issue was discovered on Canon MF237w 06.07 devices. An "I…7.5
- CVE-2020-1685When configuring stateless firewall filters in Juniper Netwo…5.8
- CVE-2020-16850Mitsubishi MELSEC iQ-R Series PLCs with firmware 49 allow an…7.5
Are you affected by CVE-2020-16844?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST