CVE-2020-16844
First published: Thu Oct 01 2020(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| go/istio.io/istio | >=1.6.0<1.6.8 | 1.6.8 |
| go/istio.io/istio | >=1.5.0<1.5.9 | 1.5.9 |
| Microsoft Windows Server 2022 | >=1.5.0<=1.5.8 | |
| Microsoft Windows Server 2022 | >=1.6.0<=1.6.7 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2020-16844
- https://github.com/istio/istio/commit/4c73414556b83f0e75c1b3a0a89a23103a71573c
- https://github.com/istio/istio/commit/72d2e135374f421b656d6f1a21f474db46134ace
- https://github.com/istio/istio/releases
- https://github.com/istio/istio/releases/tag/1.5.9
- https://github.com/istio/istio/releases/tag/1.6.8
- https://istio.io/latest/news/releases/1.5.x/announcing-1.5.9/
- https://istio.io/latest/news/releases/1.6.x/announcing-1.6.8/
- https://istio.io/latest/news/security/istio-security-2020-009/
- https://github.com/advisories/GHSA-82mm-ffjr-h86c (Advisory)
Frequently Asked Questions
What is the severity of CVE-2020-16844?
The severity of CVE-2020-16844 is medium with a CVSS score of 6.8.
How can I fix CVE-2020-16844?
To fix CVE-2020-16844, upgrade Istio to version 1.5.9 or 1.6.8, depending on the currently installed version.
Which versions of Istio are affected by CVE-2020-16844?
Istio versions 1.5.0 through 1.5.8 and 1.6.0 through 1.6.7 are affected by CVE-2020-16844.
What is the CVE ID for this vulnerability?
The CVE ID for this vulnerability is CVE-2020-16844.
What is the CWE of CVE-2020-16844?
The CWE of CVE-2020-16844 is CWE-284.
- collector/github-advisory-latest
- alias/GHSA-82mm-ffjr-h86c
- alias/CVE-2020-16844
- collector/github-advisory
- agent/last-modified-date
- agent/author
- agent/references
- agent/softwarecombine
- agent/first-publish-date
- agent/type
- collector/nvd-cve
- agent/software-canonical-lookup-request
- collector/nvd-index
- agent/weakness
- agent/severity
- agent/tags
- agent/description
- agent/event
- collector/mitre-cve
- source/MITRE
- package-manager/go
- vendor/istio
- canonical/istio istio
- version/istio istio/1.5.0
- version/istio istio/1.5.8
- version/istio istio/1.6.0
- version/istio istio/1.6.7