Vulnerability Details : CVE-2020-26521
The JWT library in NATS nats-server before 2.1.9 allows a denial of service (a nil dereference in Go code).
Vulnerability category: Denial of service
Products affected by CVE-2020-26521
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-26521
0.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 52 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-26521
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-26521
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-26521
-
http://www.openwall.com/lists/oss-security/2020/11/02/2
oss-security - [CVE-2020-26521][CVE-2020-26892] NATS JWT vulnerabilitiesMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VT67XCLIIBYRT762SVFBYFFTQFVSM3SI/
[SECURITY] Fedora 33 Update: nats-server-2.1.9-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://github.com/nats-io/nats-server/commits/master
Commits · nats-io/nats-server · GitHubPatch;Third Party Advisory
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