Cyber Risks · Cisco Talos

Vulnerability Spotlight: Multiple vulnerabilities in Nitro Pro PDF reader

Summary: Cisco Talos discovered two code execution vulnerabilities and one information disclosure flaw in Nitro Pro PDF reader version 13.9.1.155, and worked with Nitro PDF under its coordinated disclosure policy to resolve the issues and release an update. The flaws include a use-after-free in the PDF parser, an integer overflow in Pattern object parsing that can lead to arbitrary code execution, and uninitialized memory access in XML error handling, all triggered when a victim opens a malicious file.

Bottom line: Each of these flaws requires only that a user open a crafted PDF, so a single document delivered to a workstation running the unpatched 13.9.1.155 build is enough to hand an attacker code execution or leak memory contents.

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Topics
Vulnerabilities & Patching
Mentions
CVE-2020-6092CVE-2020-6093
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