A vulnerability, which was classified as problematic, was found in minidjvu 0.8. Affected is the function mdjvu_bitmap_pack_row of the file base/4bitmap.c of the component djvu File Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. CVE summarizes:

The mdjvu_bitmap_pack_row function in base/4bitmap.c in minidjvu 0.8 can cause a denial of service (invalid memory read and application crash) via a crafted djvu file.

The bug was discovered 08/07/2017. The weakness was disclosed 08/17/2017 by qflb.wu as not defined mailinglist post (Full-Disclosure). The advisory is available at seclists.org. This vulnerability is traded as CVE-2017-12443 since 08/04/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details and a public exploit are known.

The exploit is shared for download at packetstormsecurity.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 10 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 100422†). The entries VDB-105400, VDB-105401, VDB-105403 and VDB-105404 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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• minidjvu

Version

• 0.8

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• 🔍

CPE 2.2info

• 🔍
• 🔍

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