libxml2 up to 2.9.4 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, which was classified as critical, has been found in libxml2 up to 2.9.4. This impacts an unknown function. This manipulation causes xml external entity reference. The identification of this vulnerability is CVE-2016-9318. The attack can only be executed locally. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in libxml2 up to 2.9.4 (Document Processing Software). Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input 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:

libxml2 2.9.4 and earlier, as used in XMLSec 1.2.23 and earlier and other products, does not offer a flag directly indicating that the current document may be read but other files may not be opened, which makes it easier for remote attackers to conduct XML External Entity (XXE) attacks via a crafted document.

The bug was discovered 11/16/2016. The weakness was shared 11/16/2016 (Website). It is possible to read the advisory at bugzilla.gnome.org. This vulnerability is known as CVE-2016-9318 since 11/14/2016. 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. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 99916 (EulerOS 2.0 SP1 : libxml2 (EulerOS-SA-2017-1069)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Huawei Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172163 (SUSE Enterprise Linux Security Update for libxml2 (SUSE-SU-2019:13985-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 5 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (99916) and SecurityFocus (BID 94347†). The entry VDB-121969 is related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 99916
Nessus Name: EulerOS 2.0 SP1 : libxml2 (EulerOS-SA-2017-1069)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for libxml2 FEDORA-2017-be8574d593
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Timelineinfo

11/14/2016 🔍
11/15/2016 +1 days 🔍
11/15/2016 +0 days 🔍
11/16/2016 +1 days 🔍
11/16/2016 +0 days 🔍
11/16/2016 +0 days 🔍
03/28/2017 +132 days 🔍
05/02/2017 +35 days 🔍
12/04/2025 +3138 days 🔍

Sourcesinfo

Advisory: bugzilla.gnome.org
Status: Confirmed

CVE: CVE-2016-9318 (🔍)
GCVE (CVE): GCVE-0-2016-9318
GCVE (VulDB): GCVE-100-93619
SecurityFocus: 94347 - libxml2 CVE-2016-9318 XML External Entity Injection Vulnerability

See also: 🔍

Entryinfo

Created: 11/16/2016 07:58
Updated: 12/04/2025 18:25
Changes: 11/16/2016 07:58 (63), 06/01/2019 11:21 (14), 12/04/2025 18:25 (24)
Complete: 🔍
Cache ID: 216:B58:103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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