National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-20250 Detail

Current 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.

Source:  MITRE
Description Last Modified:  03/14/2019
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.8 HIGH
Vector: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 1.8


Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 6.8 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:rarlab:winrar:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
5.61


Change History

10 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-20250
NVD Published Date:
02/05/2019
NVD Last Modified:
04/26/2019