CVE-2020-28466

moderate-risk
Published 2021-03-07

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.

Do I need to act?

~
8.4% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Linuxfoundation

References (8)

Mailing List http://www.openwall.com/lists/oss-security/2021/03/16/1
Mailing List http://www.openwall.com/lists/oss-security/2021/03/16/2
Patch https://github.com/nats-io/nats-server/pull/1731
Third Party Advisory https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMNATSIONATSSERVERSERVER-1042967
Mailing List http://www.openwall.com/lists/oss-security/2021/03/16/1
Mailing List http://www.openwall.com/lists/oss-security/2021/03/16/2
Patch https://github.com/nats-io/nats-server/pull/1731
Third Party Advisory https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMNATSIONATSSERVERSERVER-1042967
41
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 10/34 · Low
Exposure 5/34 · Minimal