SB2026062989 - Multiple vulnerabilities in node-tar

Description

This security bulletin contains information about 2 vulnerabilities.

1) Type conversion (CVE-ID: N/A)

CWE-ID: CWE-704 - Type conversion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to incorrect type conversion or cast in the PAX header parser when parsing a crafted tar archive with an all-digit path value. A remote attacker can supply a specially crafted tar archive to cause a denial of service.

The crash occurs as an uncaught TypeError during extraction and bypasses application-level error handling, including error and warning handlers.

2) Infinite loop (CVE-ID: N/A)

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to loop with an unreachable exit condition in tar.replace() when scanning an attacker-controlled existing archive. A remote attacker can supply a specially crafted tar archive with a negative base-256 encoded entry size to cause a denial of service.

Only applications that call the replace API on an existing attacker-controlled archive are affected; plain extraction-only workflows are not affected.

Remediation

Install update from vendor's website.

References

• https://github.com/isaacs/node-tar/security/advisories/GHSA-w8wr-v893-vjvp
• https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w