Vulnerability · Published Oct 1, 2020 · Assigned by mitre
CVE-2020-16844
Medium 6.8
In plain English
A medium-severity security flaw in the istio.io/istio package (Go). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.8Medium
Exploit odds (30 days)1.1%top 34.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | istio.io/istio | 1.5.9 | GHSA-82mm-ffjr-h86c |
| Go | istio.io/istio | 1.6.8 | GHSA-82mm-ffjr-h86c |
Affected products (as reported)
References
- https://github.com/istio/istio/releases x_refsource_MISC
- https://istio.io/latest/news/security/istio-security-2020-009/ x_refsource_CONFIRM