What is the CVSS score of CVE-2020-27347?

CVE-2020-27347 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.7%.

Is there a public PoC exploit available for CVE-2020-27347?

Yes, a public proof-of-concept exploit is available for CVE-2020-27347. Prioritise patching immediately. EPSS: 0.7%.

Is there a patch available for CVE-2020-27347?

Yes, a patch is available for CVE-2020-27347. Update the affected software to the latest version immediately.

Tmux CVE-2020-27347

HIGH

Stack-based Buffer Overflow (CWE-121)

2020-11-06 security@ubuntu.com

Buffer Overflow Stack Overflow Tmux

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Nov 06, 2020 - 03:15 nvd

HIGH 7.8

DescriptionNVD

In tmux before version 3.1c the function input_csi_dispatch_sgr_colon() in file input.c contained a stack-based buffer-overflow that can be exploited by terminal output.

AnalysisAI

In tmux before version 3.1c the function input_csi_dispatch_sgr_colon() in file input.c contained a stack-based buffer-overflow that can be exploited by terminal output. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-121. In tmux before version 3.1c the function input_csi_dispatch_sgr_colon() in file input.c contained a stack-based buffer-overflow that can be exploited by terminal output. Affected products include: Tmux Project Tmux. Version information: version 3.1.

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.