CVE-2019-12671 Explained : Impact and Mitigation
Learn about CVE-2019-12671, a vulnerability in Cisco IOS XE Software allowing local attackers to gain shell access on affected devices. Find mitigation steps and prevention measures here.
A weakness in Cisco IOS XE Software's CLI allows local attackers with authentication to gain shell access on a targeted device, potentially executing commands on the OS.
Understanding CVE-2019-12671
This CVE involves a vulnerability in Cisco IOS XE Software that could lead to unauthorized shell access on affected devices.
What is CVE-2019-12671?
The vulnerability stems from inadequate enforcement of the consent token used to authorize shell access, enabling authenticated local attackers to exploit the flaw.
The Impact of CVE-2019-12671
- CVSS Base Score: 6.7 (Medium Severity)
- Attack Vector: Local
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- Privileges Required: High
- Scope: Unchanged
- User Interaction: None
- The vulnerability could allow attackers to execute commands on the underlying OS, posing a significant risk to affected systems.
Technical Details of CVE-2019-12671
This section provides detailed technical information about the vulnerability.
Vulnerability Description
- The flaw allows local attackers with authentication to obtain shell access on a targeted device.
Affected Systems and Versions
- Affected Product: Cisco IOS XE Software 3.2.9SG
- Vendor: Cisco
- Version: Unspecified
Exploitation Mechanism
- Attackers need to authenticate themselves to the CLI and request shell access on the affected device to exploit the vulnerability.
Mitigation and Prevention
Protecting systems from CVE-2019-12671 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Monitor vendor updates and apply patches promptly.
- Restrict access to vulnerable systems.
- Implement strong authentication mechanisms.
Long-Term Security Practices
- Regularly update and patch systems to address known vulnerabilities.
- Conduct security training for users to prevent social engineering attacks.
Patching and Updates
- Cisco has likely released patches to address this vulnerability. Ensure systems are updated with the latest security fixes.