CVE-2021-23270 — HIGH (7.5)

Vulnerability Description

In Gargoyle OS 1.12.0, when IPv6 is used, a routing loop can occur that generates excessive network traffic between an affected device and its upstream ISP's router. This occurs when a link prefix route points to a point-to-point link, a destination IPv6 address belongs to the prefix and is not a local IPv6 address, and a router advertisement is received with at least one global unique IPv6 prefix for which the on-link flag is set.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Gargoyle-Router	Gargoyle	1.12.0

Related Weaknesses (CWE)

CWE-834

References

https://github.com/ericpaulbishop/gargoyle/commit/24afe944a6ffff53d84a748384e276PatchThird Party Advisory
https://github.com/ericpaulbishop/gargoyle/commit/24afe944a6ffff53d84a748384e276PatchThird Party Advisory

FAQ

What is CVE-2021-23270?

CVE-2021-23270 is a vulnerability with a CVSS score of 7.5 (HIGH). In Gargoyle OS 1.12.0, when IPv6 is used, a routing loop can occur that generates excessive network traffic between an affected device and its upstream ISP's router. This occurs when a link prefix rou...

How severe is CVE-2021-23270?

CVE-2021-23270 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-2021-23270?

Check the references section above for vendor advisories and patch information. Affected products include: Gargoyle-Router Gargoyle.