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Junos SRX Series: Possible Unauthenticated Root Login Vulnerability
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Junos OS on SRX series is prone to a possible unauthenticated root login vulnerability
Insight
Insight
Using the 'request system software' command with the 'partition' option on an SRX Series device upgrading to Junos OS 12.1X46 can leave the system in a state where root CLI login is allowed without a password due to the system reverting to a 'safe mode' authentication triggered by the failed upgrade. Additionally, valid authentication credentials fail to work due to the same issue. Only root with no password will work. This issue only affects SRX Series devices upgraded to Junos OS 12.1X46 releases. No other platform or version of Junos OS is affected by this vulnerability, and no other Juniper Networks products or platforms are affected by this issue.
Affected Software
Affected Software
Junos OS 12.1X46 on SRX Series
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. As a workaround avoid using the 'partition' option when upgrading an SRX Series device to Junos OS 12.1X46 prior to 12.1X46-D50.