Junos OS: SSL-Proxy DoS (JSA10973)

Medium Nessus Plugin ID 130270

Synopsis

The remote device is missing a vendor-supplied security patch.

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's self-reported version number.

Solution

Apply the relevant Junos software release referenced in Juniper advisory JSA10973.

See Also

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10973

Plugin Details

Severity: Medium

ID: 130270

File Name: juniper_jsa10973.nasl

Version: 1.3

Type: combined

Published: 2019/10/25

Updated: 2019/11/04

Dependencies: 55932

Risk Information

Risk Factor: Medium

CVSS Score Source: CVE-2019-0051

CVSS v2.0

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: cpe:/o:juniper:junos

Required KB Items: Host/Juniper/JUNOS/Version, Host/Juniper/model

Patch Publication Date: 2019/10/09

Vulnerability Publication Date: 2019/10/09

Reference Information

CVE: CVE-2019-0051

JSA: JSA10973

IAVA: 2019-A-0391