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Junos SSH Denial of Service Vulnerability
Information
Severity
Severity
High
Family
Family
JunOS Local Security Checks
CVSSv2 Base
CVSSv2 Base
7.8
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:C
Solution Type
Solution Type
Vendor Patch
Created
Created
8 years ago
Modified
Modified
5 years ago
Summary
Junos OS is prone to Denial of Service vulnerability on the SSH server.
Insight
Insight
The SSH server used in Junos allows an unauthenticated remote attacker to consume large amounts of CPU time prior to authentication, possibly leading to a partial DoS attack. The attacker must be able to reach the device via SSH through any existing access lists or firewall filters, and the issue only occurs if SSH is enabled.
Affected Software
Affected Software
Junos OS 12.1, 12.3, 13.2, 13.3, 14.1 and 14.2
Detection Method
Detection Method
Checks if a vulnerable OS build is present on the target host.
Solution
Solution
New builds of Junos OS software are available from Juniper.