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Proactive Defense: The Importance of Incident Response Planning in Cybersecurity
Rewterz Threat Alert – Attackers are targeting vulnerable Fortigate and Pulse Secure SSL VPNs
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August 27, 2019
Severity
High
Analysis Summary
CVE 2019-1738, CVE 2019-1739, CVE 2019-1740
Multiple vulnerabilities in the Network-Based Application Recognition (NBAR) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. These vulnerabilities are due to a parsing issue on DNS packets. An attacker could exploit these vulnerabilities by sending crafted DNS packets through routers that are running an affected version and have NBAR enabled. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.
Impact
Denial of service
Affected Vendors
Cisco
Affected Products
- Cisco IOS Software
- Cisco IOS XE Software
Remediation
Please see vendor’s advisory for more details
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-nbar