Apache FOP up to 2.1 xml external entity reference

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Apache FOP up to 2.1 and classified as critical. Affected by this issue is some unknown functionality. The manipulation results in xml external entity reference. This vulnerability is identified as CVE-2017-5661. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Apache FOP up to 2.1. Affected is an unknown code. The manipulation with an unknown input leads to a xml external entity reference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In Apache FOP before 2.2, files lying on the filesystem of the server which uses FOP can be revealed to arbitrary users who send maliciously formed SVG files. The file types that can be shown depend on the user context in which the exploitable application is running. If the user is root a full compromise of the server - including confidential or sensitive files - would be possible. XXE can also be used to attack the availability of the server via denial of service as the references within a xml document can trivially trigger an amplification attack.

The bug was discovered 04/18/2017. The weakness was released 04/18/2017 (Website). The advisory is shared for download at xmlgraphics.apache.org. This vulnerability is traded as CVE-2017-5661 since 01/29/2017. It is possible to launch the attack remotely. A authentication is needed for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 99738 (Debian DLA-927-1 : fop security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371200 (IBM Websphere Portal Multiple Vulnerabilities (swg22006871)).

Upgrading to version 2.2 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (99738) and SecurityFocus (BID 97947†). Entries connected to this vulnerability are available at VDB-99937, VDB-108083, VDB-108113 and VDB-108222. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.3
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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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: 99738
Nessus Name: Debian DLA-927-1 : fop security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for fop USN-3281-1
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: FOP 2.2

Timelineinfo

01/29/2017 🔍
04/18/2017 +79 days 🔍
04/18/2017 +0 days 🔍
04/18/2017 +0 days 🔍
04/18/2017 +0 days 🔍
04/19/2017 +1 days 🔍
04/29/2017 +10 days 🔍
05/01/2017 +2 days 🔍
10/19/2019 +901 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: xmlgraphics.apache.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-5661 (🔍)
GCVE (CVE): GCVE-0-2017-5661
GCVE (VulDB): GCVE-100-99936

OVAL: 🔍

SecurityFocus: 97947 - Apache FOP CVE-2017-5661 XML External Entity Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 04/19/2017 11:42
Updated: 10/19/2019 11:07
Changes: 04/19/2017 11:42 (76), 10/19/2019 11:07 (5)
Complete: 🔍
Cache ID: 216::103

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