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CVE-2012-0386

Status Candidate

Overview

The SSHv2 implementation in Cisco IOS 12.2, 12.4, 15.0, 15.1, and 15.2 and IOS XE 2.3.x through 2.6.x and 3.1.xS through 3.4.xS before 3.4.2S allows remote attackers to cause a denial of service (device reload) via a crafted username in a reverse SSH login attempt, aka Bug ID CSCtr49064.

Related Files

Cisco Security Advisory 20120328-ssh
Posted Mar 29, 2012
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - The Secure Shell (SSH) server implementation in Cisco IOS Software and Cisco IOS XE Software contains a denial of service (DoS) vulnerability in the SSH version 2 (SSHv2) feature. An unauthenticated, remote attacker could exploit this vulnerability by attempting a reverse SSH login with a crafted username. Successful exploitation of this vulnerability could allow an attacker to create a DoS condition by causing the device to reload. Repeated exploits could create a sustained DoS condition. The SSH server in Cisco IOS Software and Cisco IOS XE Software is an optional service, but its use is highly recommended as a security best practice for the management of Cisco IOS devices. Devices that are not configured to accept SSHv2 connections are not affected by this vulnerability. Cisco has released free software updates that address this vulnerability.

tags | advisory, remote, denial of service, shell
systems | cisco, osx
advisories | CVE-2012-0386
MD5 | a91d87508705fbbed4ab6cf5e057b000
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