ZEIT serve Directory Traversal Sensitive Information Disclosure Vulnerability [CVE-2019-5415]
CVE Number – CVE-2019-5415
A vulnerability in serve could allow an unauthenticated, remote attacker to access sensitive information on a targeted system.
The vulnerability is due to the improper handling of user-supplied input by the affected software. An attacker could exploit this vulnerability by sending a requests that submit malicious input to the affected software. A successful exploit could allow the attacker to access sensitive information that could be used to launch additional attacks.
ZEIT has confirmed the vulnerability and released software updates.
Analysis
- To exploit this vulnerability, the attacker must send a malicious request to the targeted system, making exploitation more difficult in environments that restrict network access from untrusted sources.
Safeguards
- Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to run both firewall and antivirus applications to minimize the potential of inbound and outbound threats.
Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.
Administrators can help protect affected systems from external attacks by using a solid firewall strategy.
Administrators are advised to monitor affected systems.
Vendor Announcements
- ZEIT has confirmed the vulnerability in a third-party advisory at the following link: [serve] Directory listing and File access even when they have been set to be ignored (using dot-slash)
Fixed Software
- ZEIT has released software updates at the following link: Serve Releases
Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.