Rapid7 Vulnerability & Exploit Database

OpenSSH SSHv1 Duplicate Block Denial of Service

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OpenSSH SSHv1 Duplicate Block Denial of Service

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
09/26/2006
Created
07/25/2018
Added
08/15/2007
Modified
05/27/2016

Description

sshd in OpenSSH before 4.4, when using the version 1 SSH protocol, allows remote attackers to cause a denial of service (CPU consumption) via an SSH packet that contains duplicate blocks, which is not properly handled by the CRC compensation attack detector.

Solution(s)

  • openbsd-openssh-upgrade-4_4

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