The flowd process, responsible for forwarding traffic in SRX Series services gateways, may crash and restart when processing specific transit IP packets through an IPSec tunnel. Continued processing of these packets may result in an extended Denial of Service (DoS) condition.

This issue only occurs when IPSec tunnels are configured. Systems without IPSec tunnel configurations are not vulnerable to this issue.

This issue affects Juniper Networks Junos OS:

• 15.1X49 versions prior to 15.1X49-D171, 15.1X49-D180 on SRX Series;
• 18.2 versions 18.2R2-S1 and later, prior to 18.2R3 on SRX Series;
• 18.4 versions prior to 18.4R2 on SRX Series.

The following example shows a sample IPSec tunnel configuration:

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

This issue was seen during production usage.

This issue has been assigned  CVE-2019-0060 .

The following software releases have been updated to resolve this specific issue: 15.1X49-D171, 15.1X49-D180, 18.2R3, 18.4R2, 19.1R1, and all subsequent releases.

This issue is being tracked as PR  1409277  which is visible on the Customer Support website.

Note: Juniper SIRT's  policy  is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).
 

Software Releases, patches and updates are available at https://www.juniper.net/support/downloads/ .
 

There are no viable workarounds for this issue.
 

• KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin Publication Process [juniper.net]
• KB16765: In which releases are vulnerabilities fixed? [juniper.net]
• KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories [juniper.net]
• Report a Security Vulnerability - How to Contact the Juniper Networks Security Incident Response Team
• CVE-2019-0060 at cve.mitre.org