CVE-2020-8843
Last modified
CVE-2020-8843 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. An issue was discovered in Istio 1.3 through 1.3.6. Under certain circumstances, it is possible to bypass a specifically configured Mixer policy. EPSS estimates a 1.06% chance of exploitation in the next 30 days.
Description
An issue was discovered in Istio 1.3 through 1.3.6. Under certain circumstances, it is possible to bypass a specifically configured Mixer policy. Istio-proxy accepts the x-istio-attributes header at ingress that can be used to affect policy decisions when Mixer policy selectively applies to a source equal to ingress. To exploit this vulnerability, someone has to encode a source.uid in this header. This feature is disabled by default in Istio 1.3 and 1.4.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Istio | Istio | >= 1.3.0, <= 1.3.6 |
References
- https://istio.io/news/security/Vendor Advisory
- https://istio.io/news/security/istio-security-2020-002/Vendor Advisory
- https://istio.io/news/security/Vendor Advisory
- https://istio.io/news/security/istio-security-2020-002/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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