CVE-2021-22564
4.5 · MEDIUMOverview
CVE-2021-22564 is a medium-severity vulnerability affecting libjxl_project libjxl. It was published on November 1, 2021 and has a CVSS 3.1 base score of 4.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 4.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
For certain valid JPEG XL images with a size slightly larger than an integer number of groups (256x256 pixels) when processing the groups out of order the decoder can perform an out of bounds copy of image pixels from an image buffer in the heap to another. This copy can occur when processing the right or bottom edges of the image, but only when groups are processed in certain order. Groups can be processed out of order in multi-threaded decoding environments with heavy thread load but also with images that contain the groups in an arbitrary order in the file. It is recommended to upgrade past 0.6.0 or patch with https://github.com/libjxl/libjxl/pull/775
Remediation
Check the references section for vendor advisories and patches from libjxl_project. Update libjxl to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| libjxl_project | libjxl | 0 | Affected |
Frequently Asked Questions
What is CVE-2021-22564?
CVE-2021-22564 is a medium-severity vulnerability affecting libjxl_project libjxl. It was published on November 1, 2021 and has a CVSS 3.1 base score of 4.5 (MEDIUM).
How severe is CVE-2021-22564?
This vulnerability has a CVSS 3.1 base score of 4.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-22564?
Check the references section for vendor advisories and patches from libjxl_project. Update libjxl to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-22564?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-22564 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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