CVE-2019-0064
CVE-2019-0064 is a high-severity vulnerability in Juniper Junos with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (67th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Juniper Junos
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2019-0064?
- 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.
- How severe is CVE-2019-0064?
- CVE-2019-0064 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2019-0064 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-0064?
- CVE-2019-0064 primarily affects Juniper Junos. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2019-0064?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2019-0064 published?
- CVE-2019-0064 was published on 2019-10-09 and last updated on 2026-06-17.
References
Affected products (3)
- cpe:2.3:o:juniper:junos:18.2:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:18.4:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:*
More vulnerabilities in Juniper Junos
- CVE-2021-0248 — Critical (CVSS 10.0): This issue is not applicable to NFX NextGen Software. On NFX Series devices the use of Hard-coded Credentials in…
- CVE-2021-0211 — Critical (CVSS 10.0): An improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Evolved Routing…
- CVE-2020-1614 — Critical (CVSS 10.0): A Use of Hard-coded Credentials vulnerability exists in the NFX250 Series for the vSRX Virtual Network Function (VNF)…
- CVE-2017-2343 — Critical (CVSS 10.0): The Integrated User Firewall (UserFW) feature was introduced in Junos OS version 12.1X47-D10 on the Juniper SRX Series…
- CVE-2013-4685 — Critical (CVSS 10.0): Buffer overflow in flowd in Juniper Junos 10.4 before 10.4S14, 11.4 before 11.4R7, 12.1 before 12.1R6, and 12.1X44…
- CVE-2017-2349 — Critical (CVSS 9.9): A command injection vulnerability in the IDP feature of Juniper Networks Junos OS on SRX series devices potentially…