CVE-2017-12231: Cisco IOS Software Network Address Translation Denial-of-Service Vulnerability
In CISA’s Known Exploited Vulnerabilities catalog: Cisco IOS Software Network Address Translation Denial-of-Service Vulnerability.
Added , federal remediation due . Known ransomware use: Unknown.
Required action: Apply updates per vendor instructions.
Description
A vulnerability in the implementation of Network Address Translation (NAT) functionality in Cisco IOS 12.4 through 15.6 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to the improper translation of H.323 messages that use the Registration, Admission, and Status (RAS) protocol and are sent to an affected device via IPv4 packets. An attacker could exploit this vulnerability by sending a crafted H.323 RAS packet through an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition. This vulnerability affects Cisco devices that are configured to use an application layer gateway with NAT (NAT ALG) for H.323 RAS messages. By default, a NAT ALG is enabled for H.323 RAS messages. Cisco Bug IDs: CSCvc57217.
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · CWE-399
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Cisco IOS
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-nat (opens in new tab)
- www.securityfocus.com/bid/101039 (opens in new tab)
- www.securitytracker.com/id/1039449 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)