CVE Catalog

CVE-2017-3819

High
Published: Translated: NVD NIST

Summary

A privilege escalation vulnerability in the Secure Shell (SSH) subsystem in the StarOS operating system for Cisco ASR 5000, ASR 5500, ASR 5700 Series devices, and Cisco Virtualized Packet Core could allow an authenticated, remote attacker to gain unrestricted, root shell access.

Risk Assessment

This vulnerability poses a serious risk to organizations as it allows an attacker to gain full administrative privileges, potentially leading to system compromise.

Recommendation

It is recommended to implement appropriate security measures, such as improving input validation and monitoring SSH/SFTP logs for unauthorized access attempts.

Related vulnerabilities

Original NVD description (English source)

A privilege escalation vulnerability in the Secure Shell (SSH) subsystem in the StarOS operating system for Cisco ASR 5000 Series, ASR 5500 Series, ASR 5700 Series devices, and Cisco Virtualized Packet Core could allow an authenticated, remote attacker to gain unrestricted, root shell access. The vulnerability is due to missing input validation of parameters passed during SSH or SFTP login. An attacker could exploit this vulnerability by providing crafted user input to the SSH or SFTP command-line interface (CLI) during SSH or SFTP login. An exploit could allow an authenticated attacker to gain root privileges access on the router. Note: Only traffic directed to the affected system can be used to exploit this vulnerability. This vulnerability can be triggered via both IPv4 and IPv6 traffic. An established TCP connection toward port 22, the SSH default port, is needed to perform the attack. The attacker must have valid credentials to login to the system via SSH or SFTP. The following pr

Vulnerability data from NVD (NIST) · CISA KEV · EPSS