Buffer overflow in Google Llc Libjxl
CVE-2021-22564
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
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.5 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (21.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Google Llc Libjxl — versions unspecified
- Libjxl Project
Weakness classification (CWE)
References
- github.com/libjxl/libjxl/pull/775 (Patch, Third Party Advisory)
- github.com/libjxl/libjxl/issues/708 (Exploit, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2021-22564?
- CVE-2021-22564 is a medium-severity vulnerability in Google Llc Libjxl, classified under Heap-based Buffer Overflow. CVSS score: 4.5/10. Published 2021-11-01.
- How severe is CVE-2021-22564?
- Medium severity. CVSS v3 base score is 4.5 out of 10.