2014-10 Security Bulletin: JunosE: SRP Reset upon receipt of a malformed ICMP packet when icmpTraffic logging is enabled (CVE-2014-6377)

Product Affected:This issue can affect all E Series routers running an affected release that are accessible via ICMP.

Problem:Receipt of a specifically malformed ICMP packet sent to the interface or loopback IP address of an E Series router while icmpTraffic logging is enabled may lead to an SRP reset, type: processor exception 0x300 (data access), in task: ip_RxData_8. In a redundant SRP configuration, the system will recover immediately. However, additional malformed packets may cause follow-on SRP resets and lead to an extended service outage.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-2014-6377.

Solution:JunosE releases containing the fix specifically include: 13.3.3p0-1, 14.3.2, 15.1.0, and all subsequent releases.This issue is being tracked as CQ 97568 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:Disable icmpTraffic logging if active ICMP troublshooting is not being performed.Use access lists or firewall filters to limit access to the router via ICMP only from trusted hosts.

Implementation:How to obtain fixed software:Security vulnerabilities in JunosE are fixed in the next available Maintenance Release of each supported JunosE version. In some cases, a Maintenance Release is not planned to be available in an appropriate time-frame. For these cases, JunosE patches are made available in order to be more timely. Security Advisory and Security Notices will indicate which Maintenance and patch releases contain fixes for the issues described. Upon request to JTAC, customers will be provided download instructions for a patch release. Although Juniper does not provide formal Release Note documentation for a patch release, a list of resolved defects are published via Patch Release Histories available on the download page.

Related Links: CVSS Score:7.1 (AV:N/AC:M/Au:N/C:N/I:N/A:C)

Risk Level:High

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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