SB2021102809 - Security restrictions bypass in Cisco Adaptive Security Appliance and Firepower Threat Defense
Published: October 28, 2021
Security Bulletin ID
SB2021102809
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-34787)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists in the identity-based firewall (IDFW) rule processing feature. A remote attacker can send a specially crafted network request to bypass access control list (ACL) rules on the device, bypass security protections, and send network traffic to unauthorized hosts.
Remediation
Install update from vendor's website.