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HIGH · 7.5

CVE-2019-12657

A vulnerability in Unified Threat Defense (UTD) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper val...

Vulnerability Description

A vulnerability in Unified Threat Defense (UTD) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper validation of IPv6 packets through the UTD feature. An attacker could exploit this vulnerability by sending IPv6 traffic through an affected device that is configured with UTD. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
CiscoIos Xe16.3.6
Cisco4321 Integrated Services Router-
Cisco4331 Integrated Services Router-
Cisco4351 Integrated Services Router-
Cisco4431 Integrated Services Router-
Cisco4451-X Integrated Services Router-
CiscoAsr 1000 -
CiscoAsr 1001-Hx-
CiscoAsr 1001-X-
CiscoAsr 1002-Hx-
CiscoAsr 1002-X-
CiscoCatalyst 3650-12X48Fd-E-
CiscoCatalyst 3650-12X48Fd-L-
CiscoCatalyst 3650-12X48Fd-S-
CiscoCatalyst 3650-12X48Uq-E-
CiscoCatalyst 3650-12X48Uq-L-
CiscoCatalyst 3650-12X48Uq-S-
CiscoCatalyst 3650-12X48Ur-E-
CiscoCatalyst 3650-12X48Ur-L-
CiscoCatalyst 3650-12X48Ur-S-

Related Weaknesses (CWE)

CWE-20

References

FAQ

What is CVE-2019-12657?

CVE-2019-12657 is a vulnerability with a CVSS score of 7.5 (HIGH). A vulnerability in Unified Threat Defense (UTD) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper val...

How severe is CVE-2019-12657?

CVE-2019-12657 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-12657?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe, Cisco 4321 Integrated Services Router, Cisco 4331 Integrated Services Router, Cisco 4351 Integrated Services Router, Cisco 4431 Integrated Services Router.