CVE-2020-10739: Null Pointer Dereference
First published: Tue Jun 02 2020(Updated: )
Istio 1.4.x before 1.4.9 and Istio 1.5.x before 1.5.4 contain the following vulnerability when telemetry v2 is enabled: by sending a specially crafted packet, an attacker could trigger a Null Pointer Exception resulting in a Denial of Service. This could be sent to the ingress gateway or a sidecar, triggering a null pointer exception which results in a denial of service. This also affects servicemesh-proxy where a null pointer exception flaw was found in servicemesh-proxy. When running Telemetry v2 (not on by default in version 1.4.x), an attacker could send a specially crafted packet to the ingress gateway or proxy sidecar, triggering a denial of service.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Istio Istio | >=1.4.0<1.4.9 | |
| Istio Istio | >=1.5.0<1.5.4 |
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Reference Links
Frequently Asked Questions
What is CVE-2020-10739?
CVE-2020-10739 is a vulnerability in Istio versions 1.4.x before 1.4.9 and 1.5.x before 1.5.4 that allows an attacker to trigger a Null Pointer Exception resulting in a Denial of Service.
What is the severity of CVE-2020-10739?
The severity of CVE-2020-10739 is high with a CVSS score of 7.5.
How does CVE-2020-10739 affect Istio?
CVE-2020-10739 affects Istio versions 1.4.x before 1.4.9 and 1.5.x before 1.5.4 when telemetry v2 is enabled.
What is the fix for CVE-2020-10739?
To fix CVE-2020-10739, update Istio to version 1.4.9 or 1.5.4 or later.
Where can I find more information about CVE-2020-10739?
More information about CVE-2020-10739 can be found at the following references: 1. [Bugzilla Red Hat](https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10739) 2. [GitHub commit](https://github.com/istio/envoy/commit/8788a3cf255b647fd14e6b5e2585abaaedb28153#diff-fcf2cf5dd389b5285f882ba4a8708633) 3. [Istio Security Advisory](https://istio.io/news/security/istio-security-2020-005/)
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