Product Affected

This issue can affect any product or platform running Junos OS 10.4, 11.4, 12.1, 12.1X44, 12.2, 12.3, or 13.1.
Critical
9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C)

Problem

A vulnerability in J-Web may allow remote attackers to bypass CSRF (Cross-Site Request Forgery) Protection in J-Web. This allows performing administrative actions such as creating new administrative accounts as a means to gain complete control over the device.

This issue was found during internal product security testing.

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue has been assigned CVE-2013-4689.

Solution

The following software releases have been updated to resolve this specific issue:

  • All Junos OS software releases built on or after 2013-08-31, or
  • Junos OS 10.4R13, 11.4R7, 12.1R6, 12.1X44-D15, 12.1X45-D10, 12.2R3, 12.3R2, 13.1R3 and all subsequent releases (i.e. all releases built after 13.1R3).
Customers can confirm the build date of any Junos OS release by issuing the command 'show version detail'.

This issue is being tracked as PR 827189 and is visible on the Customer Support website.

KB16765 [juniper.net] - "In which releases are vulnerabilities fixed?" describes which release vulnerabilities are fixed as per our End of Engineering and End of Life support policies. How to obtain fixed software:

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.

Workaround

Disable J-Web, or limit access to only trusted hosts.

Severity Assessment

Information for how Juniper Networks uses CVSS can be found at KB 16446 [juniper.net] "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."

Related Information

Acknowledgements