Input validation error in Junos OS - CVE-2019-0064
Published: October 14, 2019
Vulnerability identifier: #VU21758
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-0064
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when processing TCP packets if "set security zones security-zone <zone> tcp-rst" is configured. A remote attacker can send a specially crafted TCP packet, crash the flowd process and cause a denial of service on the target system.
Note: This vulnerability affects only Junos OS on SRX 5000 Series.
Affected software
Junos OS
How to mitigate CVE-2019-0064
Install updates from vendor's website.
Junos OS - addressed in versions 18.2R3-S1, 18.4R2-S1, 18.4R3, 19.2R1-S1, 19.2R2, 19.3R1