CVE-2018-0453
HighCVSS 8.2Exploitation Probability (EPSS)
Low risk34th percentile - higher than 34% of all known CVEs
Summary
A vulnerability in the Sourcefire tunnel control channel protocol in Cisco Firepower System Software on FTD sensors could allow an authenticated, local attacker to execute specific CLI commands with root privileges on the Cisco Firepower Management Center (FMC) or through FMC on other Firepower sensors. The issue is due to insufficient checks for certain CLI commands when executed via a Sourcefire tunnel. An attacker with root privileges on at least one sensor or FMC could send commands, potentially modifying configurations or deleting files.
Risk Assessment
An attacker with root privileges on one device could take control of the FMC and all managed devices, potentially leading to severe security breaches and configuration integrity issues.
Recommendation
Apply Cisco updates for Firepower System. Restrict root access to essential personnel only and monitor administrative activities.
Other vulnerabilities in Cisco Firepower System Software
See all- CVE-2017-6674High
A vulnerability in the feature-license management functionality of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass URL filters that have been configured for an affected device.
- CVE-2016-6460High
A vulnerability in the FTP Representational State Transfer Application Programming Interface (REST API) for Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass FTP malware detection rules and download malware over an FTP connection.
- CVE-2016-6439High
A vulnerability in the detection engine reassembly of HTTP packets for Cisco Firepower System Software before 6.0.1 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the Snort process unexpectedly restarting.
- CVE-2016-1394High
Cisco Firepower System Software versions 6.0.0 through 6.1.0 has a hardcoded account that allows remote attackers to gain CLI access if they know the password.
- CVE-2018-0254Medium
A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass configured file action policies if Intelligent Application Bypass (IAB) with a drop percentage threshold is also configured. The issue is due to incorrect counting of dropped traffic percentage. An attacker could send network traffic to the device, bypassing policies and allowing traffic that should be dropped.
- CVE-2018-0244Medium
A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass a configured file action policy to drop the SMB protocol if a malware file is detected. The issue is due to how SMB handles a case where a large file transfer fails. An attacker could send a crafted SMB file transfer request through the device, allowing an SMB file containing malware to pass.
- CVE-2018-0243Medium
A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass a configured file action policy intended to drop SMB2 and SMB3 protocols if malware is detected. The issue is due to incorrect detection of SMB2/SMB3 files based on total file length. An attacker could exploit this by sending a crafted SMB2 or SMB3 transfer request through the targeted device.
- CVE-2018-0138Medium
A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass file policies configured to block files transmitted via the BitTorrent protocol. The issue is due to incorrect detection of BitTorrent handshake messages. An attacker could exploit this by sending a crafted BitTorrent connection request to an affected device.
- CVE-2017-3887Medium
A vulnerability in the detection engine handling SSL packets for Cisco Firepower System Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition because the Snort process unexpectedly restarts. This affects versions prior to the first fixed release when configured with an SSL Decrypt-Resign policy.
Original NVD description (English source)
A vulnerability in the Sourcefire tunnel control channel protocol in Cisco Firepower System Software running on Cisco Firepower Threat Defense (FTD) sensors could allow an authenticated, local attacker to execute specific CLI commands with root privileges on the Cisco Firepower Management Center (FMC), or through Cisco FMC on other Firepower sensors and devices that are controlled by the same Cisco FMC. To send the commands, the attacker must have root privileges for at least one affected sensor or the Cisco FMC. The vulnerability exists because the affected software performs insufficient checks for certain CLI commands, if the commands are executed via a Sourcefire tunnel connection. An attacker could exploit this vulnerability by authenticating with root privileges to a Firepower sensor or Cisco FMC, and then sending specific CLI commands to the Cisco FMC or through the Cisco FMC to another Firepower sensor via the Sourcefire tunnel connection. A successful exploit could allow the attacker to modify device configurations or delete files on the device that is running Cisco FMC Software or on any Firepower device that is managed by Cisco FMC.