CVE-2021-3127 — HIGH (7.5) — White Hats Nepal

Q: What is CVE-2021-3127?

CVE-2021-3127 is a vulnerability with a CVSS score of 7.5 (HIGH). NATS Server 2.x before 2.2.0 and JWT library before 2.0.1 have Incorrect Access Control because Import Token bindings are mishandled.

Q: How severe is CVE-2021-3127?

CVE-2021-3127 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2021-3127?

Check the references section above for vendor advisories and patch information. Affected products include: Linuxfoundation Nats-Server, Nats Jwt Library.

Vulnerability Description

NATS Server 2.x before 2.2.0 and JWT library before 2.0.1 have Incorrect Access Control because Import Token bindings are mishandled.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Linuxfoundation	Nats-Server	>= 2.0.0, < 2.2.0
Nats	Jwt Library	< 2.0.1

Related Weaknesses (CWE)

CWE-755

References

https://advisories.nats.io/CVE/CVE-2021-3127.txtExploitVendor Advisory
https://advisories.nats.io/CVE/CVE-2021-3127.txtExploitVendor Advisory

FAQ

What is CVE-2021-3127?

CVE-2021-3127 is a vulnerability with a CVSS score of 7.5 (HIGH). NATS Server 2.x before 2.2.0 and JWT library before 2.0.1 have Incorrect Access Control because Import Token bindings are mishandled.

How severe is CVE-2021-3127?

CVE-2021-3127 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-3127?

Check the references section above for vendor advisories and patch information. Affected products include: Linuxfoundation Nats-Server, Nats Jwt Library.