CVE-2021-3127: GO-2022-0386 - Import token permissions checking not enforced in github.com/nats-io/jwt

CVE-2021-3127 · Severity: low · CVSS 3.1 · Published 2022-07-01

Import token permissions checking not enforced in github.com/nats-io/jwt

Technologies: github.com/nats-io/jwt (Go), github.com/nats-io/nats-server/v2 (Go). Vendors: Go.

Quick answers

Is CVE-2021-3127 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-3127 being exploited in the wild.
How severe is CVE-2021-3127?
Low severity, with a CVSS score of 3.1, published 1 July 2022.
Which products and versions are affected?
github.com/nats-io/jwt (Go) SEMVER:introduced=0,fixed=1.2.3-0.20210314221642-a826c77dc9d2, SEMVER:introduced=0,last_affected=1.2.2; github.com/nats-io/jwt/v2 (Go) SEMVER:introduced=0,fixed=2.0.1; github.com/nats-io/nats-server/v2 (Go) SEMVER:introduced=0,fixed=2.2.0.
Is there a fix for CVE-2021-3127?
Yes. github.com/nats-io/jwt (Go): upgrade to 1.2.3-0.20210314221642-a826c77dc9d2 or later; github.com/nats-io/jwt/v2 (Go): upgrade to 2.0.1 or later; github.com/nats-io/nats-server/v2 (Go): upgrade to 2.2.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-3127?
Check whether you run github.com/nats-io/jwt (Go), github.com/nats-io/jwt/v2 (Go) or github.com/nats-io/nats-server/v2 (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • github.com/nats-io/jwt (Go): upgrade to 1.2.3-0.20210314221642-a826c77dc9d2 or later
    go get github.com/nats-io/jwt@v1.2.3-0.20210314221642-a826c77dc9d2
  • github.com/nats-io/jwt/v2 (Go): upgrade to 2.0.1 or later
    go get github.com/nats-io/jwt/v2@v2.0.1
  • github.com/nats-io/nats-server/v2 (Go): upgrade to 2.2.0 or later
    go get github.com/nats-io/nats-server/v2@v2.2.0

Affected products

  • github.com/nats-io/jwt (Go) SEMVER:introduced=0,fixed=1.2.3-0.20210314221642-a826c77dc9d2, SEMVER:introduced=0,last_affected=1.2.2
  • github.com/nats-io/jwt/v2 (Go) SEMVER:introduced=0,fixed=2.0.1
  • github.com/nats-io/nats-server/v2 (Go) SEMVER:introduced=0,fixed=2.2.0

Identifiers

  • CVE-2021-3127
  • GHSA-62mh-w5cv-p88c
  • GHSA-9r5x-fjv3-q6h4
  • GHSA-j756-f273-xhp4
  • GO-2022-0386

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