Vulnerabilities > CVE-2019-0051 - Improper Handling of Exceptional Conditions vulnerability in Juniper Junos
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
SSL-Proxy feature on SRX devices fails to handle a hardware resource limitation which can be exploited by remote SSL/TLS servers to crash the flowd daemon. Repeated crashes of the flowd daemon can result in an extended denial of service condition. For this issue to occur, clients protected by the SRX device must initiate a connection to the malicious server. This issue affects: Juniper Networks Junos OS on SRX5000 Series: 12.3X48 versions prior to 12.3X48-D85; 15.1X49 versions prior to 15.1X49-D180; 17.3 versions prior to 17.3R3-S7; 17.4 versions prior to 17.4R2-S6, 17.4R3; 18.1 versions prior to 18.1R3-S8; 18.2 versions prior to 18.2R3; 18.3 versions prior to 18.3R2; 18.4 versions prior to 18.4R2; 19.1 versions prior to 19.1R2.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 92 | |
| Hardware | 3 |
Common Weakness Enumeration (CWE)
Nessus
| NASL family | Junos Local Security Checks |
| NASL id | JUNIPER_JSA10973.NASL |
| description | According to its self-reported version number, the remote Juniper Junos device is affected by a denial of service (DoS) vulnerability in the SSL-Proxy feature on SRX devices, which fails to handle a hardware resource limitation that can be exploited by remote SSL/TLS servers to crash the flowd daemon. Repeated crashes of the flowd daemon can result in an extended DoS condition. An unauthenticated, remote attacker can exploit this issue, by convincing clients protected by the SRX device to initiate a connection with a malicious server, which will cause the system to stop responding. Note that Nessus has not tested for this issue but has instead relied only on the application |
| last seen | 2020-03-18 |
| modified | 2019-10-25 |
| plugin id | 130270 |
| published | 2019-10-25 |
| reporter | This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/130270 |
| title | Junos OS: SSL-Proxy DoS (JSA10973) |