SB2018060421 - Information disclosure in Node.js

Description

This security bulletin contains information about 1 vulnerability.

1) Information disclosure (CVE-ID: CVE-2017-16024)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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

The vulnerability allows a remote authenticated user to gain access to sensitive information.

The sync-exec module is used to simulate child_process.execSync in node versions <0.11.9. Sync-exec uses tmp directories as a buffer before returning values. Other users on the server have read access to the tmp directory, possibly allowing an attacker on the server to obtain confidential information from the buffer/tmp file, while it exists.

Remediation

Install update from vendor's website.

References

• https://cwe.mitre.org/data/definitions/377.html
• https://github.com/gvarsanyi/sync-exec/issues/17
• https://nodesecurity.io/advisories/310
• https://www.owasp.org/index.php/Insecure_Temporary_File