2015-01 Security Bulletin: Junos: Fragmented OSPFv3 packets with IPsec AH may trigger kernel crash (CVE-2014-6385)

Product Affected:This issue can affect any product or platform running Junos OS with OSPFv3 IPsec authentication enabled.

Problem:When a specially crafted fragmented OSPFv3 packet containing an IPsec Authentication Header (AH) is received, it may trigger a kernel crash causing the RE to restart. Repeated receipt of the crafted fragment can represent an extended denial of service for the router.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-2014-6385.

Solution:The following software releases have been updated to resolve this specific issue: Junos OS 11.4R13, 12.1X44-D45, 12.1X46-D30, 12.1X47-D15, 12.2R9, 12.3R7-S1, 12.3R8, 13.1R5, 13.2R6, 13.3R4, 14.1R2, 14.2R1, and all subsequent releases.This issue is being tracked as PR 993022 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:Discontinue use of the IPsec Authentication Header (AH) option for OSPFv3.

Implementation: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. Modification History: 2015-01-14: Initial publication

Related Links: CVSS Score:5.7 (AV:A/AC:M/Au:N/C:N/I:N/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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