CVE-2021-4076: A flaw exists in tang, a network-based cryptographic binding server, which could result in leak of private keys

High severity · published Mar 2, 2022

CVE-2021-4076

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

7.5

CVSS

1.6%

EPSS

On KEV

Description

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

CVSS vector

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

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

None

Availability

None

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.6% · higher than 75% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

tang ·

Affects tang v8 and above | Fixed in tang v11. · source: vendor, NVD

Affected product

tang

All tang CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2021-4076

CVE.org

https://www.cve.org/CVERecord?id=CVE-2021-4076

Issue Tracking

https://bugzilla.redhat.com/show_bug.cgi?id=2029814

Patch

https://github.com/latchset/tang/commit/e82459fda10f0630c3414ed2afbc6320bb9ea7c9

Issue Tracking

https://github.com/latchset/tang/pull/81