What is the CVSS score of CVE-2020-12821?

CVE-2020-12821 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.9%.

Is there a public PoC exploit available for CVE-2020-12821?

Yes, a public proof-of-concept exploit is available for CVE-2020-12821. Prioritise patching immediately. EPSS: 1.9%.

Is there a patch available for CVE-2020-12821?

Yes, a patch is available for CVE-2020-12821. Update the affected software to the latest version immediately.

Gossipsub CVE-2020-12821

CRITICAL

2020-07-07 cve@mitre.org

Information Disclosure Gossipsub

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Jul 07, 2020 - 20:15 nvd

CRITICAL 9.8

DescriptionNVD

Gossipsub 1.0 does not properly resist invalid message spam, such as an eclipse attack or a sybil attack.

AnalysisAI

Gossipsub 1.0 does not properly resist invalid message spam, such as an eclipse attack or a sybil attack. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

Gossipsub 1.0 does not properly resist invalid message spam, such as an eclipse attack or a sybil attack. Affected products include: Protocol Gossipsub.

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.