2015-04 Security Bulletin: SRX Series: disconnecting from console may not automatically log out (CVE-2015-3002)

Product Affected:This issue affects all SRX Series devices running Junos OS 12.1X44, 12.1X46 and 12.1X47.

Problem:On SRX Series devices “log-out-on-disconnect” feature configured under the [system port console] stanza does not work as expected after a reboot. This may allow an unauthorized attacker with physical access to the device to reconnect to the console port and gain complete administrative access.Juniper SIRT is not aware of any malicious exploitation of this vulnerability.No other Juniper Networks products or platforms are affected by this issue. This issue has been assigned CVE-2015-3002.

Solution:The following software releases have been updated to resolve this specific issue: Junos OS 12.1X44-D45 12.1X46-D30 12.1X47-D15 and all subsequent releases. This issue is being tracked as PR 1000407 and is visible on the Customer Support website.KB16765 – “In which releases are vulnerabilities fixed?” describes which release vulnerabilities are fixed as per our End of Engineering and End of Life support policies.

Workaround:Limit physical access to SRX series devices to trusted users or log out before disconnecting the console cable.

Implementation:Security vulnerabilities in Junos are fixed in the next available Maintenance Release of each supported Junos version. In some cases, a Maintenance Release is not planned to be available in an appropriate time-frame. For these cases, Service Releases are made available in order to be more timely. Security Advisory and Security Notices will indicate which Maintenance and Service Releases contain fixes for the issues described. Upon request to JTAC, customers will be provided download instructions for a Service Release. Although Juniper does not provide formal Release Note documentation for a Service Release, a list of “PRs fixed” can be provided on request.Modification History: 2015-04-08: Initial release.

Related Links: CVSS Score:CVSS Base Score: 6.9 (AV:L/AC:M/Au:N/C:C/I:C/A:C)

Risk Level:Medium

Risk Assessment:Information for how Juniper Networks uses CVSS can be found at KB 16446 “Common Vulnerability Scoring System (CVSS) and Juniper’s Security Advisories.

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