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CVE
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CVE-2018-20250Date: (C)null   (M)2019-05-30


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 Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.8CVSS Score : 6.8
Exploit Score: 1.8Exploit Score: 8.6
Impact Score: 5.9Impact Score: 6.4
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: MEDIUM
Privileges Required: NONEAuthentication: NONE
User Interaction: REQUIREDConfidentiality: PARTIAL
Scope: UNCHANGEDIntegrity: PARTIAL
Confidentiality: HIGHAvailability: PARTIAL
Integrity: HIGH 
Availability: HIGH 
  
Reference:
BID-106948
EXPLOIT-DB-46552
EXPLOIT-DB-46756
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
https://github.com/blau72/CVE-2018-20250-WinRAR-ACE
https://research.checkpoint.com/extracting-code-execution-from-winrar/
https://www.win-rar.com/whatsnew.html

CWE    1
CWE-20
OVAL    1
oval:org.secpod.oval:def:52980
XCCDF    1
CWE-20

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