Cyber Risks · Cisco Talos

Vulnerability Spotlight: Remote code execution bug in Antenna House Rainbow PDF Office document converter

Summary: Cisco Talos researcher Emmanuel Tacheau found a buffer overflow in Antenna House's Rainbow PDF Office Server Document Converter, version 7.0 Pro MR1 (7.0.2019.0220), triggered when the software converts a PowerPoint document. The TxMasterStyleAtom::parse function incorrectly checks the bounds for the number of style levels, overwriting a vtable pointer and allowing an attacker to execute code remotely; Talos confirmed the Linux64 build is affected and worked with Antenna House on an update, with Snort rules 42076 and 42077 released to detect exploitation attempts.

What you should know: A document converter that sits on a server and opens untrusted Office files is a direct path from a malicious PowerPoint to remote code execution on the host, and the fix depends on customers applying Antenna House's update rather than on any network control.

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Topics
Vulnerabilities & Patching
Mentions
CVE-2019-5030
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