8.6
High
CVE-2019-1738 A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS Software and Cisco IOS XE…
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 is 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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco IOS and IOS-XE Software 16.5 | 16.5.1a → 16.5.1 | No fix stated |
| Cisco IOS and IOS-XE Software 16.4 | 16.4.1 → 16.4.3 | No fix stated |
| Cisco IOS and IOS-XE Software 16.3 | 16.3.1a → 16.3.4 | No fix stated |
| Cisco IOS and IOS-XE Software 16.2 | 16.2.1 → 16.2.2 | No fix stated |
| Cisco IOS and IOS-XE Software 3.18 | 3.18.0S → 3.18.4S | No fix stated |
| Cisco IOS and IOS-XE Software 3.17 | 3.17.0S → 3.17.4S | No fix stated |
| Cisco IOS and IOS-XE Software 3.16 | 3.16.0S → 3.16.5aS | No fix stated |
| Cisco IOS and IOS-XE Software | 3.2.0JA | No fix stated |
References
- 20190327 Cisco IOS and IOS XE Software Network-Based Application Recognition Denial of Service Vulnerabilities tools.cisco.com
- 107597 www.securityfocus.com
Timeline
- Published
- Last modified