Vulnerability Details : CVE-2020-16844
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.
Products affected by CVE-2020-16844
- cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
- cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-16844
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 36 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-16844
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.9
|
MEDIUM | AV:N/AC:M/Au:S/C:P/I:P/A:N |
6.8
|
4.9
|
NIST | |
|
6.8
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
1.6
|
5.2
|
NIST |
References for CVE-2020-16844
-
https://github.com/istio/istio/releases
Releases · istio/istio · GitHubVendor Advisory
-
https://istio.io/latest/news/security/istio-security-2020-009/
Istio / ISTIO-SECURITY-2020-009Exploit;Mitigation;Vendor Advisory
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