CVE-2022-21721

Summary

Next.js is a React framework. Starting with version 12.0.0 and prior to version 12.0.9, vulnerable code could allow a bad actor to trigger a denial of service attack for anyone using i18n functionality. In order to be affected by this CVE, one must use next start or a custom server and the built-in i18n support. Deployments on Vercel, along with similar environments where invalid requests are filtered before reaching Next.js, are not affected. A patch has been released, next@12.0.9, that mitigates this issue. As a workaround, one may ensure /${locale}/_next/ is blocked from reaching the Next.js instance until it becomes feasible to upgrade.

Affected Software

Weaknesses

• n/a

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/vercel/next.js/security/advisories/GHSA-wr66-vrwm-5g5x
• https://github.com/vercel/next.js/pull/33503
• https://github.com/vercel/next.js/releases/tag/v12.0.9

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/vercel/next.js/security/advisories/GHSA-wr66-vrwm-5g5x
• https://github.com/vercel/next.js/pull/33503
• https://github.com/vercel/next.js/releases/tag/v12.0.9

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