CVE-2019-12678 : Security Advisory and Response
Learn about CVE-2019-12678, a vulnerability in Cisco ASA and FTD Software allowing DoS attacks via SIP message exploitation. Find mitigation steps and patching advice.
A vulnerability in the Session Initiation Protocol (SIP) inspection module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated attacker to cause a denial of service (DoS) situation. This flaw arises from the improper interpretation of SIP messages, potentially leading to a crash.
Understanding CVE-2019-12678
This CVE involves a vulnerability in the SIP inspection module of Cisco ASA and FTD Software, allowing unauthorized attackers to trigger a DoS attack.
What is CVE-2019-12678?
The flaw in the SIP inspection module of Cisco ASA and FTD Software enables unauthenticated attackers to exploit SIP message interpretation, potentially causing a DoS situation.
The Impact of CVE-2019-12678
The vulnerability could lead to a denial of service (DoS) scenario on affected devices due to improper handling of SIP messages, potentially resulting in a system crash.
Technical Details of CVE-2019-12678
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability in the SIP inspection module of Cisco ASA and FTD Software allows attackers to exploit SIP message interpretation, potentially causing a DoS situation.
Affected Systems and Versions
- Product: Cisco Adaptive Security Appliance (ASA) Software
- Vendor: Cisco
- Versions: Unspecified
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Availability Impact: High
- Base Score: 8.6 (High Severity)
- Vector String: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Mitigation and Prevention
Protecting systems from CVE-2019-12678 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-supplied patches promptly
- Monitor network traffic for suspicious SIP packets
- Implement network segmentation to limit the impact of potential attacks
Long-Term Security Practices
- Regularly update and patch software and firmware
- Conduct security assessments and audits to identify vulnerabilities
- Educate users on safe practices and security awareness
Patching and Updates
- Refer to the vendor's security advisory for patch availability and installation instructions