Secunia Research has discovered a vulnerability in KDE Okular, which can be exploited by malicious people to potentially compromise a user's system.
The vulnerability is caused due to a boundary error within the RLE decompression in the "TranscribePalmImageToJPEG()" function in generators/plucker/unpluck/image.cpp. This can be exploited to cause a heap-based buffer overflow by e.g. tricking a user into opening a specially crafted PDB file.
The vulnerability is confirmed in version 4.4.5. Other versions may also be affected.
Solution: Apply patches. See vendor's advisory for additional details.
Provided and/or discovered by: Stefan Cornelius, Secunia Research.
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Subject: KDE Okular PDB Parsing RLE Decompression Buffer Overflow
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