CVE-2024-11403
CVE-2024-11403 is a critical-severity vulnerability in Libjxl Project Libjxl with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v4: 6.9
- EPSS exploit prediction: 1% (46th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-33796
- Weakness: CWE-125
- Affected product: Libjxl Project Libjxl
- Published:
- Last modified:
Description
There exists an out of bounds read/write in LibJXL versions prior to commit 9cc451b91b74ba470fd72bd48c121e9f33d24c99. The JPEG decoder used by the JPEG XL encoder when doing JPEG recompression (i.e. if using JxlEncoderAddJPEGFrame on untrusted input) does not properly check bounds in the presence of incomplete codes. This could lead to an out-of-bounds write. In jpegli which is released as part of the same project, the same vulnerability is present. However, the relevant buffer is part of a bigger structure, and the code makes no assumptions on the values that could be overwritten. The issue could however cause jpegli to read uninitialised memory, or addresses of functions.
Frequently asked questions
- What is CVE-2024-11403?
- There exists an out of bounds read/write in LibJXL versions prior to commit 9cc451b91b74ba470fd72bd48c121e9f33d24c99. The JPEG decoder used by the JPEG XL encoder when doing JPEG recompression (i.e. if using JxlEncoderAddJPEGFrame on untrusted input) does not properly check bounds in the presence of incomplete codes. This could lead to an out-of-bounds write. In jpegli which is released as part of the same project, the same vulnerability is present. However, the relevant buffer is part of a bigger structure, and the code makes no assumptions on the values that could be overwritten. The issue could however cause jpegli to read uninitialised memory, or addresses of functions.
- How severe is CVE-2024-11403?
- CVE-2024-11403 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2024-11403 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-11403?
- CVE-2024-11403 affects Libjxl Project Libjxl. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-11403?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2024-11403 have an EU (EUVD) identifier?
- Yes. CVE-2024-11403 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-33796.
- When was CVE-2024-11403 published?
- CVE-2024-11403 was published on 2024-11-25 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:libjxl_project:libjxl:*:*:*:*:*:*:*:*
More vulnerabilities in Libjxl Project Libjxl
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