Heap-buffer-overflow in dlplibs: Canvas5Structure::NIBDecoder::decode

dlplibs Updated 02 Oct 2025

Summary

04/08/2023

Disclosed on

MEDIUM

Severity

No i

Fix available

Medium

Severity

Not published

CVSS Score

OSV-2022-1280: Heap-buffer-overflow in Canvas5Structure::NIBDecoder::decode. Affects dlplibs versions >= 6ad72753cf22aa4cffdc6bb7b9082c90b4ed0502. No fix is published. How to fix ↓

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Background

dlplibs is an open-source package that is part of the LibreOffice suite. It provides functionality for handling various document formats, including the ABW format. The ABW format is used for AbiWord documents. The vulnerability affects the Canvas5Structure::NIBDecoder::decode function in dlplibs, which is responsible for decoding data in the ABW format.

Vulnerability Detail

The vulnerability is a heap-buffer-overflow issue that occurs when decoding data in the ABW format using the Canvas5Structure::NIBDecoder::decode function. This vulnerability can be triggered by a specially crafted ABW file, potentially leading to a crash or arbitrary code execution. The issue was discovered through an OSS-Fuzz report and has been assigned a medium severity level. The vulnerable code can be found in the libabw repository on the LibreOffice Gerrit.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

At the moment, there is no known workaround for this vulnerability. It is recommended to apply the official patch or update the package to a fixed version as soon as it becomes available.

Conclusion

In conclusion, the dlplibs package used in the LibreOffice suite is vulnerable to a heap-buffer-overflow issue in the Canvas5Structure::NIBDecoder::decode function. This vulnerability can be exploited through specially crafted ABW files, potentially leading to a crash or arbitrary code execution. It is recommended to update the package to a fixed version or apply the official patch as soon as it becomes available. For further support on vulnerability remediation, please contact DevNack.com.

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