Vulnerability Details : CVE-2022-21679
Istio is an open platform to connect, manage, and secure microservices. In Istio 1.12.0 and 1.12.1 The authorization policy with hosts and notHosts might be accidentally bypassed for ALLOW action or rejected unexpectedly for DENY action during the upgrade from 1.11 to 1.12.0/1.12.1. Istio 1.12 supports the hosts and notHosts fields in authorization policy with a new Envoy API shipped with the 1.12 data plane. A bug in the 1.12.0 and 1.12.1 incorrectly uses the new Envoy API with the 1.11 data plane. This will cause the hosts and notHosts fields to be always matched regardless of the actual value of the host header when mixing 1.12.0/1.12.1 control plane and 1.11 data plane. Users are advised to upgrade or to not mix the 1.12.0/1.12.1 control plane with 1.11 data plane if using hosts or notHosts field in authorization policy.
Exploit prediction scoring system (EPSS) score for CVE-2022-21679
Probability of exploitation activity in the next 30 days: 0.22%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 60 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2022-21679
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
|
6.8
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |
1.6
|
5.2
|
GitHub, Inc. |
CWE ids for CVE-2022-21679
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The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated.Assigned by:
- nvd@nist.gov (Primary)
- security-advisories@github.com (Secondary)
References for CVE-2022-21679
-
https://github.com/istio/istio/security/advisories/GHSA-rwfr-xrvw-2rvv
Authorization Policy For Host Rules During Upgrades · Advisory · istio/istio · GitHubThird Party Advisory
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https://istio.io/latest/news/releases/1.12.x/announcing-1.12.2/
Istio / Announcing Istio 1.12.2Release Notes;Vendor Advisory
Products affected by CVE-2022-21679
- cpe:2.3:a:istio:istio:1.12.0:-:*:*:*:*:*:*
- cpe:2.3:a:istio:istio:1.12.0:alpha0:*:*:*:*:*:*
- cpe:2.3:a:istio:istio:1.12.0:alpha1:*:*:*:*:*:*
- cpe:2.3:a:istio:istio:1.12.0:alpha5:*:*:*:*:*:*
- cpe:2.3:a:istio:istio:1.12.0:beta0:*:*:*:*:*:*
- cpe:2.3:a:istio:istio:1.12.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:istio:istio:1.12.0:beta2:*:*:*:*:*:*
- cpe:2.3:a:istio:istio:1.12.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:istio:istio:1.12.1:*:*:*:*:*:*:*