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CVE-2022-30333

RARLAB — RARLAB UnRAR Directory Traversal Vulnerability

RARLAB · CWE-22 — Path traversal | CWE-59 · in CISA KEV since 2022-08-09

KEV since 2022 · listed over a yearRansomwareCISA KEVActively Exploited
90

EVRS 90 of 100 Immediate

Patch Immediately

Rank 137 of 2,960 tracked

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Why it scores 90

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and associated with known ransomware campaigns.

  • CISA KEVApplied
  • RansomwareApplied
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

rar -> 2:6.23-1 | rar -> 2:6.20~b1-0.1 | unrar-nonfree -> 1:6.1.7-1

Affected versions

  • unrar< 6.12
  • linux kernel
  • unix
  • debian linux10.0

Remediation

Apply updates per vendor instructions.

Fixed versions from NVD.

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 7.5 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.992 (99.94th pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Known CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2022-08-30 · KEV since 2022 · listed over a year CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. Public module exists Metasploit
EUVD cross-referenceENISA's record: CVSS 9.8 (v3.1), assigned by mitre. Listed ENISA EUVD

Description

NVD

RARLAB UnRAR before 6.12 on Linux and UNIX allows directory traversal to write to files during an extract (aka unpack) operation, as demonstrated by creating a ~/.ssh/authorized_keys file. NOTE: WinRAR and Android RAR are unaffected.

What CISA says to do

Public module

Metasploit lists the best-ranked (excellent) of 2 public modules for this CVE: UnRAR Path Traversal (CVE-2022-30333) (linux/fileformat/unrar_cve_2022_30333). A module existing is not the same as active exploitation; see metasploit.com.