CVE-2020-26521 — NULL Pointer Dereference in Nats-io JWT

CWE-476 — NULL Pointer Dereference7 documents4 sources
Severity
7.5HIGHNVD
EPSS
0.7%
top 28.35%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Github.com Nats-io JWTGithub.com Nats-io Nats-server V2Linuxfoundation Nats-server+2 more
Timeline
PublishedNov 6
Latest updateJul 1

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages4 packages

▶debiandebian/golang-github-nats-io-jwt< golang-github-nats-io-jwt 2.2.0-1 (bookworm)

Also affects: Fedora 33

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

5
OSV
Panic in NATS JWT decoding in github.com/nats-io/jwt↗2022-07-01
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OSV
Nil dereference in NATS JWT, DoS of nats-server↗2022-02-11
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GHSA
Nil dereference in NATS JWT, DoS of nats-server↗2022-02-11
▶
OSV
Nil dereference in NATS JWT causing DoS of nats-server↗2021-05-21
▶
OSV
CVE-2020-26521: The JWT library in NATS nats-server before 2↗2020-11-06
▶

📋Vendor Advisories

1
Debian
CVE-2020-26521: golang-github-nats-io-jwt - The JWT library in NATS nats-server before 2.1.9 allows a denial of service (a n...↗2020
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