CVE-2023-7101
Spreadsheet::ParseExcel — Spreadsheet::ParseExcel Remote Code Execution Vulnerability
Spreadsheet::ParseExcel · CWE-95 | CWE-94 — Code injection · in CISA KEV since 2024-01-02
EVRS 75 of 100 Urgent
Patch This Cycle
Rank 917 of 2,960 tracked
Raised to the floor for a confirmed exploited vulnerability.
Why it scores 75
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.190.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
- This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see
- nvd.nist.gov/…/CVE-2023-7101
Fixed in
libspreadsheet-parseexcel-perl -> 0.6500-1ubuntu0.20.04.1 | libspreadsheet-parseexcel-perl -> 0.6500-1.1ubuntu0.1 | libspreadsheet-parseexcel-perl -> 0.5800-1ubuntu0.1~esm1 | libspreadsheet-parseexcel-perl -> 0.6500-1ubuntu0.16.04.1~esm1 | libspreadsheet-parseexcel-perl -> 0.6500-1ubuntu0.18.04.1~esm1 | libspreadsheet-parseexcel-perl -> 0.6500-4~deb12u1 | libspreadsheet-parseexcel-perl -> 0.6500-4
Affected versions
- spreadsheet\
\ <= 0.65 - debian linux
10.0 - fedora
3839
Remediation
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 7.8 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.190 (97.3rd pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2024-01-23 · KEV since 2024 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 7.8 (v3.1), assigned by Mandiant. | Listed | ENISA EUVD |
Description
NVDSpreadsheet::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.
What CISA says to do
- This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see
- nvd.nist.gov/…/CVE-2023-7101
Public module
Metasploit lists a public excellent-rank module for this CVE: Barracuda ESG Spreadsheet::ParseExcel Arbitrary Code Execution (linux/smtp/barracuda_esg_spreadsheet_rce). A module existing is not the same as active exploitation; see metasploit.com.