Juniper Embedthis GoAhead Denial Of Service Vulnerabilities (JSA10948)

Medium Nessus Plugin ID 132038

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

See Also

https://kb.juniper.net/JSA10948

Plugin Details

Severity: Medium

ID: 132038

File Name: juniper_jsa10948.nasl

Version: 1.1

Type: combined

Published: 2019/12/13

Updated: 2019/12/13

Dependencies: 55932

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

CVSS Score Source: CVE-2018-15505

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, Settings/ParanoidReport

Patch Publication Date: 2019/07/10

Vulnerability Publication Date: 2018/08/18

Reference Information

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

JSA: JSA10948