Auth bypass in Linuxfoundation Nats-Server
CVE-2023-47090
NATS nats-server before 2.9.23 and 2.10.x before 2.10.2 has an authentication bypass. An implicit $G user in an authorization block can sometimes be used for unauthenticated access, even when the intention of the configuration was for each user to have an account. The earliest affected version is 2.2.0.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (49.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/nats-io/nats-server/security/advisories/GHSA-fr2g-9hjm-wr23 (Vendor Advisory)
- www.openwall.com/lists/oss-security/2023/10/13/2 (Mailing List, Mitigation)
- www.openwall.com/lists/oss-security/2023/10/30/1 (mailing-list, Mailing List)
Frequently asked questions
- What is CVE-2023-47090?
- CVE-2023-47090 is a medium-severity vulnerability in Linuxfoundation Nats-Server, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2023-10-30.
- How severe is CVE-2023-47090?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2023-47090 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.