CVE-2020-28466

Denial of Service (DoS)

Description

This affects all versions of package github.com/nats-io/nats-server/server. Untrusted accounts are able to crash the server using configs that represent a service export/import cycles. Disclaimer from the maintainers: Running a NATS service which is exposed to untrusted users presents a heightened risk. Any remote execution flaw or equivalent seriousness, or denial-of-service by unauthenticated users, will lead to prompt releases by the NATS maintainers. Fixes for denial of service issues with no threat of remote execution, when limited to account holders, are likely to just be committed to the main development branch with no special attention. Those who are running such services are encouraged to build regularly from git.

7.5

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 8.43% Top 10%

Third-Party Advisory openwall.com Third-Party Advisory github.com Third-Party Advisory snyk.io

Affected: n/a github.com/nats-io/nats-server/server

References

Link	Tags
https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMNATSIONATSSERVERSERVER-1042967	third party advisory
https://github.com/nats-io/nats-server/pull/1731	third party advisory patch
http://www.openwall.com/lists/oss-security/2021/03/16/1	mailing list
http://www.openwall.com/lists/oss-security/2021/03/16/2	third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2020-28466?: CVE-2020-28466 has been scored as a high severity vulnerability.
How to fix CVE-2020-28466?: To fix CVE-2020-28466, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-28466 being actively exploited in the wild?: It is possible that CVE-2020-28466 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~8% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-28466?: CVE-2020-28466 affects n/a github.com/nats-io/nats-server/server.

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