What is the CVSS score of CVE-2020-35471?

CVE-2020-35471 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 2.4%.

Is there a public PoC exploit available for CVE-2020-35471?

Yes, a public proof-of-concept exploit is available for CVE-2020-35471. Prioritise patching immediately. EPSS: 2.4%.

Is there a patch available for CVE-2020-35471?

Yes, a patch is available for CVE-2020-35471. Update the affected software to the latest version immediately.

Envoy CVE-2020-35471

HIGH

2020-12-15 cve@mitre.org

Information Disclosure Envoy

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Dec 15, 2020 - 01:15 nvd

HIGH 7.5

DescriptionNVD

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

AnalysisAI

Envoy before 1.16.1 mishandles dropped and truncated datagrams, as demonstrated by a segmentation fault for a UDP packet size larger than 1500. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

Envoy before 1.16.1 mishandles dropped and truncated datagrams, as demonstrated by a segmentation fault for a UDP packet size larger than 1500. Affected products include: Envoyproxy Envoy. Version information: before 1.16.1.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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CVE-2020-35471 vulnerability details – vuln.today

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Envoy CVE-2020-35471

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

RemediationAI

More in Envoy

Same technique Information Disclosure

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External POC / Exploit Code