Denial of Service Vulnerability in Leptonica Library (CVE-2022-38266)
Summary
CVE-2022-38266: An issue in the Leptonica linked library (v1.79.0) allows attackers to cause an arithmetic exception leading to a Denial of Service (DoS) via a crafted JPEG file. Affects leptonlib across 2 version ranges.
< 1.79.0-1.1+deb11u1
< f062b42c0ea8dddebdc6a152fd16152de215d614
Fixed in 1.79.0-1.1+deb11u1. How to fix ↓
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Background
Leptonica is an open-source library widely used for image processing and analysis. It provides various functionalities, including image reading, writing, and manipulation, making it a crucial component in many applications that handle image data. The library is known for its efficiency and versatility, but like any software, it can be susceptible to vulnerabilities that may compromise its stability and security.
Vulnerability Detail
CVE-2022-38266 is a vulnerability found in the Leptonica library version 1.79.0 that allows attackers to exploit an arithmetic exception through a specially crafted JPEG file. This can lead to a Denial of Service (DoS), causing the application using the library to crash or become unresponsive. The vulnerability arises from improper handling of certain image formats, which can trigger unexpected behavior in the library's processing functions.
How To Fix
Minimum fixed version
1.79.0-1.1+deb11u1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade leptonlibTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate upgrading is not feasible, consider implementing input validation to filter out potentially malicious JPEG files before processing them with the Leptonica library. This can help mitigate the risk of triggering the vulnerability.
Conclusion
CVE-2022-38266 represents a significant vulnerability in the Leptonica library that can lead to Denial of Service attacks. It is crucial for users to upgrade to the latest versions of the library to mitigate this risk. Additionally, implementing input validation can serve as a temporary workaround until the upgrade is completed.
See every vulnerability recorded for leptonlib →
FAQ
CVE-2022-38266 is a vulnerability in the Leptonica library that can lead to a Denial of Service due to improper handling of crafted JPEG files.
Exploiting this vulnerability can cause your application to crash or become unresponsive, impacting user experience and service availability.
The vulnerability affects Leptonica version 1.79.0. Users should upgrade to version 1.79.0-1.1+deb11u1 for Debian 11, or 1.82.0-1 for Debian 12 and 13.
Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. You can check your application against this vulnerability using the Vulert playground without any signup.
The CVSS score for CVE-2022-38266 is 6.5, indicating a moderate severity level.
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