Juniper Embedthis GoAhead Denial Of Service Vulnerabilities (JSA10948)

high Nessus Plugin ID 132038

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Synopsis

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

Description

The version of Junos OS installed on the remote host is prior to 12.3R12-S14, 12.3X48-D80, 15.1F6-S13, 15.1X49-D170, 15.1X53-D497, 16.1R4-S13, 16.2R2-S10, 17.1R3, 17.2R2-S7, 17.3R3-S5, 17.4R1-S7, or 18.1R3-S5. It is, therefore, affected by multiple vulnerabilities as referenced in the JSA10948 advisory:
- A denial of service (DoS) vulnerability exists in Embedthis GoAhead before 4.0.1 and Appweb before 7.0.2 due to An HTTP POST request with a specially crafted 'Host' header field may cause a NULL pointer dereference and thus cause a denial of service as demonstrated by the lack of a trailing ']' character in an IPv6 address. An unauthenticated, remote attacker can exploit this to conduct a denial of service attack on an arbitrary remote host. (CVE-2018-15505)
- A denial of service (DoS) vulnerability exists in Embedthis GoAhead before 4.0.1 and Appweb before 7.0.2 due to An HTTP POST request with a specially crafted 'Host' header field may cause a NULL pointer dereference and thus cause a denial of service as demonstrated by If-Modified-Since or If-Unmodified-Since with a month greater than 11. An unauthenticated, remote attacker can exploit this to conduct a denial of service attack on an arbitrary remote host. (CVE-2018-15504)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Disable J-Web, limit access to only trusted hosts or apply the relevant Junos software release referenced in Juniper advisory JSA10948

Plugin Details

Severity: High

ID: 132038

File Name: juniper_jsa10948.nasl

Version: 1.3

Type: combined

Family: Junos Local Security Checks

Published: 12/13/2019

Updated: 4/4/2024

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2018-15505

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:juniper:junos

Required KB Items: Settings/ParanoidReport, Host/Juniper/JUNOS/Version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/10/2019

Vulnerability Publication Date: 8/18/2018

Reference Information

CVE: CVE-2018-15504, CVE-2018-15505

JSA: JSA10948

Detections

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