National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-20251 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. The UNACE module (UNACEV2.dll) creates files and folders as written in the filename field even when WinRAR validator noticed the traversal attempt and requestd to abort the extraction process. the operation is cancelled only after the folders and files were created but prior to them being written, therefore allowing the attacker to create empty files and folders everywhere in the file system.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 5.5 MEDIUM
Vector:  CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/106948 Third Party Advisory VDB Entry
https://research.checkpoint.com/extracting-code-execution-from-winrar/ Exploit Third Party Advisory
https://www.win-rar.com/whatsnew.html Release Notes Vendor Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') NIST  
CWE-693 Protection Mechanism Failure Check Point Software Technologies Ltd.  

Known Affected Software Configurations Switch to CPE 2.3

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


Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-20251
NVD Published Date:
02/05/2019
NVD Last Modified:
10/09/2019