Istio up to 1.4.8/1.5.3 Telemetry v2 Crafted Packet null pointer dereference

Summaryinfo

A vulnerability was found in Istio up to 1.4.8/1.5.3 and classified as problematic. This vulnerability affects unknown code of the component Telemetry v2 Handler. Executing a manipulation as part of Crafted Packet can lead to null pointer dereference. This vulnerability is registered as CVE-2020-10739. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Istio up to 1.4.8/1.5.3. It has been declared as problematic. This vulnerability affects an unknown code of the component Telemetry v2 Handler. The manipulation as part of a Crafted Packet leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

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.

The weakness was published 06/02/2020 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability was named CVE-2020-10739 since 03/20/2020. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

Upgrading to version 1.4.9 or 1.5.4 eliminates this vulnerability.

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Productinfo

Name

• Istio

Version

• 1.4.0
• 1.4.1
• 1.4.2
• 1.4.3
• 1.4.4
• 1.4.5
• 1.4.6
• 1.4.7
• 1.4.8
• 1.5.0
• 1.5.1
• 1.5.2
• 1.5.3

CPE 2.3info

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CPE 2.2info

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