Vulnerability Report

CVE-2018-20250

CISA KEV Active

Title: Rarlab Winrar Path Traversal / LFI

Path Traversal / LFI

Proof Of Concept

PoC Available for CVE-2018-20250

CWE Category CWE-22
Published Date Feb 05, 2019
Modified Date Oct 31, 2025
Exploit Status Available
Score 7.8 CVSS v3.1
Exploit Probability (EPSS)
96.27%

Vulnerability Summary

CVE-2018-20250: 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.

Impacted Vendors

R
rarlab 1

Reference Links

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 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 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-20250
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.8
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v3.1
Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity HIGH
7.8
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
6.8
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2018-20250 Exploits & PoCs (Proof Of Concept)

Exploit-DB https://www.exploit-db.com/exploits/46756
View Code
Exploit-DB https://www.exploit-db.com/exploits/46552
View Code
MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.