CVE-2014-2111

High

Published: 27/03/2014(UTC)Translated: 17/06/2026(UTC)NVD NIST

Summary

The Application Layer Gateway (ALG) module in Cisco IOS versions 12.2 through 12.4 and 15.0 through 15.4, when NAT is used, allows remote attackers to cause a denial of service (device reload) via crafted DNS packets.

Risk Assessment

Attackers can exploit this vulnerability to remotely trigger a device reload, leading to service availability interruptions.

Recommendation

It is recommended to update Cisco IOS software to the latest version to mitigate this vulnerability.

Other vulnerabilities in Cisco IOS ALG module

CVE-2014-3361High
The ALG module in Cisco IOS versions 15.0 through 15.4 does not properly implement SIP over NAT, allowing remote attackers to cause a denial of service (device reload) via multipart SDP IPv4 traffic.

Original NVD description (English source)

The Application Layer Gateway (ALG) module in Cisco IOS 12.2 through 12.4 and 15.0 through 15.4, when NAT is used, allows remote attackers to cause a denial of service (device reload) via crafted DNS packets, aka Bug ID CSCue00996.