Vulnerability Description
A vulnerability 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. This vulnerability are due to a parsing issue on DNS packets. An attacker could exploit this vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xe | 3.2.0ja |
| Cisco | Ios | 15.3\(3\)jd |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/107597Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2PatchVendor Advisory
- http://www.securityfocus.com/bid/107597Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2PatchVendor Advisory
FAQ
What is CVE-2019-1740?
CVE-2019-1740 is a vulnerability with a CVSS score of 8.6 (HIGH). A vulnerability 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 ...
How severe is CVE-2019-1740?
CVE-2019-1740 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-1740?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe, Cisco Ios.