VDB-128071 · CVE-2018-20171 · GCVE-0-2018-20171

Nagios XI up to 5.5.7 magpie_simple.php url cross site scripting

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.9	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in Nagios XI up to 5.5.7. This impacts an unknown function of the file rss_dashlet/magpierss/scripts/magpie_simple.php. This manipulation of the argument url as part of Parameter causes cross site scripting. This vulnerability is handled as CVE-2018-20171. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Nagios XI up to 5.5.7 (Log Management Software). Affected by this vulnerability is some unknown processing of the file rss_dashlet/magpierss/scripts/magpie_simple.php. The manipulation of the argument url as part of a Parameter leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

An issue was discovered in Nagios XI before 5.5.8. The url parameter of rss_dashlet/magpierss/scripts/magpie_simple.php is not filtered, resulting in an XSS vulnerability.

The bug was discovered 12/10/2018. The weakness was released 12/17/2018 (Website). It is possible to read the advisory at nagios.com. This vulnerability is known as CVE-2018-20171 since 12/17/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:rss_dashlet/magpierss/scripts/magpie_simple.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 5.5.8 eliminates this vulnerability.

Entries connected to this vulnerability are available at VDB-128072, VDB-132598, VDB-132599 and VDB-132600. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Log Management Software

Name

Nagios XI

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Nagios XI 5.5.8

Timelineinfo

12/10/2018 🔍
12/17/2018 +7 days 🔍
12/17/2018 +0 days 🔍
12/17/2018 +0 days 🔍
12/18/2018 +1 days 🔍
04/21/2020 +490 days 🔍

Sourcesinfo

Advisory: nagios.com
Status: Not defined

CVE: CVE-2018-20171 (🔍)
GCVE (CVE): GCVE-0-2018-20171
GCVE (VulDB): GCVE-100-128071
scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 12/18/2018 09:22
Updated: 04/21/2020 16:52
Changes: 12/18/2018 09:22 (64), 04/21/2020 16:52 (1)
Complete: 🔍
Cache ID: 216::103