SB2026101215 - Multiple vulerabilities in junrar

Description

This security bulletin contains information about 2 vulnerabilities.

1) Path traversal (CVE-ID: N/A)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences within RAR5 link extraction on Java 8 environments. A remote attacker can send a specially crafted HTTP request and create arbitrary files on the system.

2) Detection of Error Condition Without Action (CVE-ID: N/A)

CWE-ID: CWE-390 - Detection of error condition without action

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to detection of error conditions without action in the Archive.getInputStream(FileHeader) method. A remote attacker can provide a specially crafted or corrupted archive to deliver modified or partial data.

Remediation

Install update from vendor's website.

References

• https://github.com/junrar/junrar/security/advisories/GHSA-ccq9-hw6f-p9cm
• https://github.com/junrar/junrar/security/advisories/GHSA-frq4-6xmx-hm4g