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CVE-2018-20250 CISA KEV · Actively exploitedLinked to ransomware

Vulnerability in Check Point Software Technologies Ltd. WinRAR

CVSS score

7.8

EPSS probability

%96.0

Risk score

15.0

Published

7 y ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Mitigation available

Apply updates per vendor instructions.

Impact on My Inventory

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Vulnerability description

DayBreach CVE AI Research

CVE-2018-20250 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

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.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2018-20250 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1Check Point Software Technologies Ltd.WinRAR View
2rarlabwinrar View
Total affected vendors: 2|Products: 2

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
7.8CVSS V3_1HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HCVE ADP
7.8CVSS V31HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HNVD
6.8CVSS V2—AV:N/AC:M/Au:N/C:P/I:P/A:PNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Workaround

Resmî yama doğrulanamadı; geçici azaltım veya workaround mevcut.

canonical

Apply updates per vendor instructions.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

This CVE is marked as actively exploited in the CISA KEV catalogue, but no verified, downloadable public PoC or Metasploit module has been found yet. Evidence of active exploitation does not mean that public exploit code exists.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-20250 is associated with the following CWEs:

CWE-36: Common Weakness Enumeration Entry CWE-36CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-20250 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureYerel erişim
PermissionsGerekmiyor
UserGerekiyor

Official Sources and Advisories

https://github.com/blau72/CVE-2018-20250-WinRAR-ACEvendor-advisoryhttps://research.checkpoint.com/extracting-code-execution-from-winrar/vendor-advisory46552vendor-advisory106948vendor-advisoryhttps://www.win-rar.com/whatsnew.htmlvendor-advisoryhttp://packetstormsecurity.com/files/152618/RARLAB-WinRAR-ACE-Format-Input-Validation-Remote-Code-Execution.htmlvendor-advisoryhttp://www.rapid7.com/db/modules/exploit/windows/fileformat/winrar_acevendor-advisory46756vendor-advisoryhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-20250nvdCISA Known Exploited Vulnerabilities Catalogkev

CVSS Vector Radar Chart

7.8 / 10
Attack VectorLocalComplexityLowPrivilegesNoneUser Interact.RequiredConfidentialityLowIntegrityHighAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone required
User Interaction—
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)High
Availability (Erişilebilirlik)High

Geçici çözüm

Resmî yama doğrulanamadı; geçici azaltım veya workaround mevcut.

Follow the vendor

CP
Check Point Software Technologies Ltd. logo
Check Point Software Technologies Ltd.
R
rarlab logo
rarlab

Weakness Type (CWE & CAPEC)

CWE-36 CWE-22

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