medium6.8
CVE-2020-16844
Authorization bypass in Istio
Impact
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. ### Specific Go Packages Affected istio.io/istio/pilot/pkg/security/authz/model/matcher
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | istio.io/istio | >= 1.5.0, < 1.5.9 | 1.5.9 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Istio | Istio | from 1.5.0 through 1.5.8 from 1.6.0 through 1.6.7 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/istio/istio/releases
- https://istio.io/latest/news/security/istio-security-2020-009/
- https://github.com/advisories/GHSA-82mm-ffjr-h86c
- 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/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/