Support Support Downloads Knowledge Base Service Request Manager My Juniper Community

Knowledge Base

Search our Knowledge Base sites to find answers to your questions.

Ask All Knowledge Base Sites All Knowledge Base Sites JunosE Defect (KA)Knowledge BaseSecurity AdvisoriesTechnical BulletinsTechnotes Sign in to display secure content and recently viewed articles

2019-10 Security Bulletin: Junos OS: SRX5000 Series: flowd process crash due to receipt of specific TCP packet (CVE-2019-0064)

0

0

Article ID: JSA10963 SECURITY_ADVISORIES Last Updated: 09 Oct 2019Version: 3.0
Product Affected:
This issue affects Junos OS. Affected platforms: SRX 5000 Series.
Problem:
On SRX5000 Series devices, if 'set security zones security-zone <zone> tcp-rst' is configured, the flowd process may crash when a specific TCP packet is received by the device and triggers a new session. The process restarts automatically. However, receipt of a constant stream of these TCP packets may result in an extended Denial of Service (DoS) condition on the device.

This issue affects Juniper Networks Junos OS:

  • 18.2R3 on SRX 5000 Series;
  • 18.4R2 on SRX 5000 Series;
  • 19.2R1 on SRX 5000 Series.


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

This issue was found during internal product security testing or research.

This issue has been assigned CVE-2019-0064.
 

Solution:
The following software releases have been updated to resolve this specific issue: 18.2R3-S1, 18.4R2-S1, 18.4R3, 19.2R1-S1, 19.2R2, 19.3R1, and all subsequent releases.

This issue is being tracked as PR 1445480 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).
 

Workaround:
There are no viable workarounds for this issue.
 
Implementation:
Software Releases, patches and updates are available at https://www.juniper.net/support/downloads/.
 
Modification History:
2019-10-09: Initial Publication.
 
CVSS Score:
7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Severity Level:
High
Severity Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."
Comment on this article > Affected Products Browse the Knowledge Base for more articles related to these product categories. Select a category to begin.

Security Alerts and Vulnerabilities

Security Alerts and Vulnerabilities Product Alerts and Software Release Notices Problem Report (PR) Search Tool EOL Notices and Bulletins JTAC User Guide Customer Care User Guide Pathfinder SRX High Availability Configurator SRX VPN Configurator Training Courses and Videos End User Licence Agreement Global Search