Junos OS: SIP ALG flowd DoS (JSA10953)

high Nessus Plugin ID 130505

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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 vulnerability in the SIP ALG packet processing service which allows an attacker to cause a Denial of Service (DoS) to the device. A remote, unauthenticated attacker can exploit this by sending specific types of valid SIP traffic to the device to cause the flowd process to crash and generate a core dump while processing SIP ALG traffic. Continued receipt of these SIP packets will cause the device 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 JSA10953.

Plugin Details

Severity: High

ID: 130505

File Name: juniper_jsa10953.nasl

Version: 1.4

Type: combined

Family: Junos Local Security Checks

Published: 11/5/2019

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-2019-0055

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-2019-0055

IAVA: 2019-A-0388

JSA: JSA10953

Detections

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