Vulnerability Monitor

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CVE-2017-6607

A vulnerability in the DNS code of Cisco ASA Software could allow an unauthenticated, remote attacker to cause an affected device to reload or corrupt the information present in the device's local DNS cache. The vulnerability is due to a flaw in handling crafted DNS response messages. An attacker could exploit this vulnerability by triggering a DNS request from the Cisco ASA Software and replying with a crafted response. A successful exploit could cause the device to reload, resulting in a denial of service (DoS) condition or corruption of the local DNS cache information. Note: Only traffic directed to the affected device can be used to exploit this vulnerability. This vulnerability affects Cisco ASA Software configured in routed or transparent firewall mode and single or multiple context mode. This vulnerability can be triggered by IPv4 and IPv6 traffic. This vulnerability affects Cisco ASA Software running on the following products: Cisco ASA 1000V Cloud Firewall, Cisco ASA 5500 Series Adaptive Security Appliances, Cisco ASA 5500-X Series Next-Generation Firewalls, Cisco ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Cisco Adaptive Security Virtual Appliance (ASAv), Cisco Firepower 9300 ASA Security Module, Cisco ISA 3000 Industrial Security Appliance. Fixed versions: 9.1(7.12) 9.2(4.18) 9.4(3.12) 9.5(3.2) 9.6(2.2). Cisco Bug IDs: CSCvb40898.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.7, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from cisco organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2017, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2017-04-20T22:59:00.510

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 8.7 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

4.9

Weaknesses

Type: Secondary
CWE-399
Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	cisco	adaptive_security_appliance_software	9.0.1	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.2	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.2.10	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.3	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.3.6	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.3.8	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4.1	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4.5	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4.7	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4.17	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4.20	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4.24	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4.26	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4.29	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4.33	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4.35	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4.37	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4.40	Yes
Operating System	cisco	adaptive_security_appliance_software	9.0.4.42	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1\(7\)4	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1\(7\)6	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1\(7\)7	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1\(7\)9	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1\(7\)11	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.1	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.1.4	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.2	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.2.8	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.3	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.3.2	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.4	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.4.5	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.5	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.5.10	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.5.12	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.5.15	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.5.21	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.6	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.6.1	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.6.4	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.6.6	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.6.8	Yes
Operating System	cisco	adaptive_security_appliance_software	9.1.6.10	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2\(0.0\)	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2\(0.104\)	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2\(3.1\)	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.1	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.2	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.2.4	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.2.7	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.2.8	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.3	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.3.3	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.3.4	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.4	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.4.2	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.4.4	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.4.8	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.4.10	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.4.13	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.4.14	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.4.16	Yes
Operating System	cisco	adaptive_security_appliance_software	9.2.4.17	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3\(1.50\)	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3\(1.105\)	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3\(2.100\)	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3\(2.243\)	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3.1	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3.1.1	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3.2	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3.2.2	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3.3	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3.3.1	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3.3.2	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3.3.5	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3.3.6	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3.3.9	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3.3.10	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3.3.11	Yes
Operating System	cisco	adaptive_security_appliance_software	9.3.5	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.0.115	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.1	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.1.1	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.1.2	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.1.3	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.1.5	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.2	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.2.3	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.3	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.3.3	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.3.4	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.3.6	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.3.8	Yes
Operating System	cisco	adaptive_security_appliance_software	9.4.3.11	Yes
Operating System	cisco	adaptive_security_appliance_software	9.5.1	Yes
Operating System	cisco	adaptive_security_appliance_software	9.5.2	Yes
Operating System	cisco	adaptive_security_appliance_software	9.5.2.6	Yes
Operating System	cisco	adaptive_security_appliance_software	9.5.2.10	Yes
Operating System	cisco	adaptive_security_appliance_software	9.5.2.14	Yes
Operating System	cisco	adaptive_security_appliance_software	9.5.3	Yes
Operating System	cisco	adaptive_security_appliance_software	9.5.3.1	Yes
Operating System	cisco	adaptive_security_appliance_software	9.6.0	Yes
Operating System	cisco	adaptive_security_appliance_software	9.6.1	Yes
Operating System	cisco	adaptive_security_appliance_software	9.6.1.3	Yes
Operating System	cisco	adaptive_security_appliance_software	9.6.1.5	Yes
Operating System	cisco	adaptive_security_appliance_software	9.6.1.10	Yes
Operating System	cisco	adaptive_security_appliance_software	9.6.2	Yes
Operating System	cisco	adaptive_security_appliance_software	9.6.2.1	Yes

References

http://www.securityfocus.com/bid/97933 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1038319 ([email protected])
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170419-asa-dns Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/97933 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1038319 (af854a3a-2127-422b-91ae-364da2661108)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170419-asa-dns Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.