7.5
Advisory Published
Updated

CVE-2020-35471

First published: Tue Dec 15 2020(Updated: )

Envoy before 1.16.1 mishandles dropped and truncated datagrams, as demonstrated by a segmentation fault for a UDP packet size larger than 1500.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
IBM Cloud Pak for Security (CP4S)<=1.6.0.1
IBM Cloud Pak for Security (CP4S)<=1.6.0.0
IBM Cloud Pak for Security (CP4S)<=1.5.0.1
IBM Cloud Pak for Security (CP4S)<=1.5.0.0
IBM Cloud Pak for Security (CP4S)<=1.4.0.0
Envoyproxy Envoy<1.16.1

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID for this Envoy Proxy vulnerability?

    The vulnerability ID for this Envoy Proxy vulnerability is CVE-2020-35471.

  • What is the severity level of CVE-2020-35471?

    The severity level of CVE-2020-35471 is high, with a CVSS score of 7.5.

  • What is the affected software by CVE-2020-35471?

    The affected software by CVE-2020-35471 includes Envoy Proxy versions up to 1.16.1 and IBM Cloud Pak for Security (CP4S) versions up to 1.6.0.1.

  • How does CVE-2020-35471 cause a denial of service?

    CVE-2020-35471 causes a denial of service by mishandling dropped and truncated datagrams, allowing a remote attacker to exploit the vulnerability by sending an overly large UDP packet.

  • Where can I find more information about CVE-2020-35471?

    You can find more information about CVE-2020-35471 on the GitHub links provided: [link1](https://github.com/envoyproxy/envoy/compare/v1.16.0...v1.16.1), [link2](https://github.com/envoyproxy/envoy/issues/14113), [link3](https://github.com/envoyproxy/envoy/pull/14122).

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