A vulnerability was found in ActivePDF up to 2018.1.0.18321. It has been rated as critical. Affected by this issue is some unknown functionality of the component Pictview. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The Pictview image processing library embedded in the ActivePDF toolkit through 2018.1.0.18321 is prone to multiple out of bounds write and sign errors, allowing a remote attacker to execute arbitrary code on vulnerable applications using the ActivePDF Toolkit to process untrusted images.

The bug was discovered 02/26/2018. The weakness was presented 02/28/2018 as not defined mailinglist post (Full-Disclosure). The advisory is shared for download at seclists.org. This vulnerability is handled as CVE-2018-7264 since 02/20/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 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 Exploit-DB (44251).

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• ActivePDF

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• 2018.1.0.18321

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