SB2018071309 - Security restrictions bypass in Cisco FireSIGHT
Published: July 13, 2018
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Improper input validation (CVE-ID: CVE-2018-0384)
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The vulnerability exists in the detection engine due to an error when handling of TCP packets that are received out of order when a TCP SYN retransmission is issued. A remote attacker can send a maliciously crafted connection and bypass a URL-based access control policy that is configured to block traffic for the affected system.
2) Improper input validation (CVE-ID: CVE-2018-0383)
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The vulnerability exists in the detection engine due to an error when handling of FTP control connections. A remote attacker can send a maliciously crafted FTP connection to transfer a file to an affected device and bypass a file policy that is configured to apply the Block upload with reset action to FTP traffic.
Remediation
Install update from vendor's website.