7.8
CVSSv2

CVE-2013-5476

Published: 27/09/2013 Updated: 07/10/2013
CVSS v2 Base Score: 7.8 | Impact Score: 6.9 | Exploitability Score: 10
VMScore: 694
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Vulnerability Summary

The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 up to and including 15.2, when content filtering or HTTP ALG inspection is enabled, allows remote malicious users to cause a denial of service (device reload or hang) via crafted IPv4 HTTP traffic, aka Bug ID CSCtx56174.

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cisco ios 15.2

cisco ios 15.1

Vendor Advisories

A vulnerability in the Zone-Based Firewall (ZBFW) component of Cisco IOS Software could allow an unauthenticated, remote attacker to cause an affected device to hang or reload The vulnerability is due to improper processing of specific HTTP packets when the device is configured for either Cisco IOS Content Filtering or HTTP application layer gate ...