CVE-2018-20250 Information

Description

In WinRAR versions prior to and including 5.61 There is path traversal vulnerability when crafting the filename field of the ACE format (in UNACEV2.dll). When the filename field is manipulated with specific patterns the destination (extraction) folder is ignored thus treating the filename as an absolute path.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

http://packetstormsecurity.com/files/152618/RARLAB-WinRAR-ACE-Format-Input-Validation-Remote-Code-Execution.html http://www.rapid7.com/db/modules/exploit/windows/fileformat/winrar_ace http://www.securityfocus.com/bid/106948 https://github.com/blau72/CVE-2018-20250-WinRAR-ACE https://research.checkpoint.com/extracting-code-execution-from-winrar/ https://www.exploit-db.com/exploits/46552/ https://www.exploit-db.com/exploits/46756/ https://www.win-rar.com/whatsnew.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8