VDB-113743 · CVE-2017-18197 · Nessus 109224

mxGraph up to 3.7.5 SAXParserFactory mxGraphViewImageReader.java convert XML Data xml external entity reference

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.
8.1	$0-$5k	0.00

Summaryinfo

A vulnerability was found in mxGraph up to 3.7.5. It has been rated as critical. This vulnerability affects the function convert of the file mxGraphViewImageReader.java of the component SAXParserFactory. This manipulation as part of XML Data causes xml external entity reference. This vulnerability appears as CVE-2017-18197. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in mxGraph up to 3.7.5. Affected by this vulnerability is the function convert of the file mxGraphViewImageReader.java of the component SAXParserFactory. The manipulation as part of a XML Data leads to a xml external entity reference vulnerability. The CWE definition for the vulnerability is CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In mxGraphViewImageReader.java in mxGraph before 3.7.6, the SAXParserFactory instance in convert() is missing flags to prevent XML External Entity (XXE) attacks, as demonstrated by /ServerView.

The bug was discovered 11/22/2017. The weakness was presented 02/24/2018 (GitHub Repository). It is possible to read the advisory at github.com. This vulnerability is known as CVE-2017-18197 since 02/23/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 93 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 109224 (Fedora 27 : jgraphx (2018-b268b5bbb5)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170915 (OpenSUSE Security Update for jgraphx (openSUSE-SU-2018:0616-1)).

Upgrading to version 3.7.6 eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (109224). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

mxGraph

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.1

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 109224
Nessus Name: Fedora 27 : jgraphx (2018-b268b5bbb5)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 900689
OpenVAS Name: Debian LTS Advisory ([SECURITY] [DLA 1299-1] libjgraphx-java security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: mxGraph 3.7.6

Timelineinfo

11/22/2017 🔍
02/23/2018 +93 days 🔍
02/23/2018 +0 days 🔍
02/24/2018 +1 days 🔍
02/24/2018 +0 days 🔍
04/21/2018 +56 days 🔍
04/23/2018 +2 days 🔍
02/08/2023 +1752 days 🔍

Sourcesinfo

Advisory: FEDORA-2018-b268b5bbb5
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-18197 (🔍)
GCVE (CVE): GCVE-0-2017-18197
GCVE (VulDB): GCVE-100-113743

Entryinfo

Created: 02/24/2018 09:24
Updated: 02/08/2023 18:34
Changes: 02/24/2018 09:24 (75), 01/08/2020 09:01 (3), 02/08/2023 18:19 (4), 02/08/2023 18:27 (1), 02/08/2023 18:34 (1)
Complete: 🔍
Cache ID: 216::103