CVE Vulnerability

CVE-2018-20251

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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

5.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

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

Configuration 1

cpe:2.3:a:rarlab:winrar:*:*:*:*:*:*:*:*
Information

Published : 2019-02-05 08:29

Updated : 2019-10-09 11:39

NVD link : CVE-2018-20251

Mitre link : CVE-2018-20251

Products Affected

Rarlab

Winrar

CWE
CWE-22