Vulnerability Spotlight: TALOS-2017-0430/0431: Multiple Vulnerabilities in FreeXL Library
Summary: Cisco Talos disclosed TALOS-2017-0431 / CVE-2017-2924, a heap-based buffer overflow in the read_legacy_biff function of the FreeXL library that occurs when it parses a DIMENSION record filled with data from a malicious XLS file in BIFF format. An attacker can use the flaw to overwrite large parts of memory to crash the application or execute arbitrary code by overwriting critical control flow structures, and Snort rules 44271-44272 and 44273-44274 were published for it.
What's compelling: The trigger is an ordinary XLS file in BIFF format, so the exploit path runs through documents users already open without a second thought, and the same advisory notes Talos reported 5 vulnerabilities to Broadcom and Dell in ControlVault3 firmware and its Windows APIs.
Read the original at Cisco Talos ↗
- Topics
- Cloud Security
- Mentions
- CVE-2017-2924
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