CVE-2023-38831

Summary

RARLAB WinRAR before 6.23 allows attackers to execute arbitrary code when a user attempts to view a benign file within a ZIP archive. The issue occurs because a ZIP archive may include a benign file (such as an ordinary .JPG file) and also a folder that has the same name as the benign file, and the contents of the folder (which may include executable content) are processed during an attempt to access only the benign file. This was exploited in the wild in April through October 2023.

Affected Software

Weaknesses

• n/a

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: active
  • Automatable: no
  • Technical Impact: total

Additional References

• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-38831

CVE Program Container

Additional References

• https://www.group-ib.com/blog/cve-2023-38831-winrar-zero-day/
• https://www.bleepingcomputer.com/news/security/winrar-zero-day-exploited-since-april-to-hack-trading-accounts/
• https://news.ycombinator.com/item?id=37236100
• http://packetstormsecurity.com/files/174573/WinRAR-Remote-Code-Execution.html
• https://blog.google/threat-analysis-group/government-backed-actors-exploiting-winrar-vulnerability/

References

• https://www.group-ib.com/blog/cve-2023-38831-winrar-zero-day/
• https://www.bleepingcomputer.com/news/security/winrar-zero-day-exploited-since-april-to-hack-trading-accounts/
• https://news.ycombinator.com/item?id=37236100
• http://packetstormsecurity.com/files/174573/WinRAR-Remote-Code-Execution.html
• https://blog.google/threat-analysis-group/government-backed-actors-exploiting-winrar-vulnerability/

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