CVE-2021-4076

tang: private key leak

View on CVE.org

Published Mar 2, 2022 CVSS 3.1 · 7.5 High EPSS 1.6% KEV · Not listed

Description

A flaw exists in tang, a network-based cryptographic binding server, which could result in leak of private keys.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

tang

affected

Version	Status	Constraints
`Affects tang v8 and above \| Fixed in tang v11.`	affected	—

Configuration 1 [-]

cpe:2.3:a:tang_project:tang:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
Debian DSA	DSA-5025-1	tang security update
EUVD	EUVD-2021-33968	A flaw exists in tang, a network-based cryptographic binding server, which could result in leak of private keys.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact None

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: 1.6% (1.564% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://bugzilla.redhat.com/show_bug.cgi?id=2029814
https://github.com/latchset/tang/commit/e82459fda10f0630c3414ed2afbc6320bb9ea7c9
https://github.com/latchset/tang/pull/81
https://nvd.nist.gov/vuln/detail/CVE-2021-4076
https://www.cve.org/CVERecord?id=CVE-2021-4076

History

No history.

Subscriptions

Tang Project Tang

Weaknesses

Sources

CVE record Updated: Aug 3, 2024, 5:16 PM

Status: PUBLISHED
Assigner: redhat
Published: Mar 2, 2022, 10:23 PM
Updated: Aug 3, 2024, 5:16 PM
Reserved: Dec 7, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 4:18 AM

Status: Modified
Published: Mar 2, 2022, 11:15 PM
Modified: Jun 17, 2026, 4:18 AM

View source JSON

Red Hat Updated: Dec 7, 2021, 12:00 AM

Severity: Moderate
Public date: Dec 7, 2021, 12:00 AM

View source Bugzilla JSON

OpenCVE enrichment No data

No data.

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