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[ CVE-2023-7101 · Published 24 Dec 2023 ]

Spreadsheet::ParseExcel Remote Code Execution Vulnerability

Exploited · CISA KEV CVSS 7.8 EPSS 19%Fix available

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2024-01-02
  • EPSS: 19% chance of exploitation in the next 30 days (higher than 97% of CVEs)

[ Description ]Official description

Spreadsheet::ParseExcel version 0.65 is a Perl module used for parsing Excel files. Spreadsheet::ParseExcel is vulnerable to an arbitrary code execution (ACE) vulnerability due to passing unvalidated input from a file into a string-type “eval”. Specifically, the issue stems from the evaluation of Number format strings (not to be confused with printf-style format strings) within the Excel parsing logic.

CISA: Spreadsheet::ParseExcel contains a remote code execution vulnerability due to passing unvalidated input from a file into a string-type “eval”. Specifically, the issue stems from the evaluation of Number format strings within the Excel parsing logic.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 23 Jan 2024): Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

[ References ]References