Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2020-26521

NULL Pointer Dereference

Published: Nov 06, 2020 | Modified: Nov 07, 2023
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2020-26521
CWEhttps://cwe.mitre.org/data/definitions/476.html

The JWT library in NATS nats-server before 2.1.9 allows a denial of service (a nil dereference in Go code).

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Nats-server Linuxfoundation * 2.1.9 (excluding)
Golang-github-nats-io-jwt Ubuntu groovy *
Golang-github-nats-io-jwt Ubuntu hirsute *
Golang-github-nats-io-jwt Ubuntu impish *
Golang-github-nats-io-jwt Ubuntu kinetic *
Golang-github-nats-io-jwt Ubuntu lunar *
Golang-github-nats-io-jwt Ubuntu mantic *
Golang-github-nats-io-jwt Ubuntu trusty *

Potential Mitigations

References

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