Junos OS: SSL-Proxy DoS (JSA10973)

high Nessus Plugin ID 130270

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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.

Plugin Details

Severity: High

ID: 130270

File Name: juniper_jsa10973.nasl

Version: 1.5

Type: combined

Family: Junos Local Security Checks

Published: 10/25/2019

Updated: 1/28/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2019-0051

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:juniper:junos

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/9/2019

Vulnerability Publication Date: 10/9/2019

Reference Information

CVE: CVE-2019-0051

IAVA: 2019-A-0391

JSA: JSA10973

Detections

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