CVE-2016-9318

libxml2: XML External Entity vulnerability

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

libxml2 2.9.4 y versiones anteriores, como se usa en XMLSec 1.2.23 y versiones anteriores y otros productos, no ofrece un indicador que indique directamente que el documento actual puede ser leido pero otros archivos no pueden ser abiertos, lo que facilita a atacantes remotos llevar a cabo ataques XML External Entity (XXE) a través de un documento manipulado.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-11-14 CVE Reserved
2016-11-16 CVE Published
2024-08-06 CVE Updated
2024-08-06 First Exploit
2024-10-10 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-611: Improper Restriction of XML External Entity Reference

CAPEC

References (9)

URL	Tag	Source
http://www.securityfocus.com/bid/94347	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/04/msg00004.html	Mailing List

URL	Date	SRC
https://github.com/lsh123/xmlsec/issues/43	2024-08-06

URL	Date	SRC
https://bugzilla.gnome.org/show_bug.cgi?id=772726	2022-04-08

URL	Date	SRC
https://security.gentoo.org/glsa/201711-01	2022-04-08
https://usn.ubuntu.com/3739-1	2022-04-08
https://usn.ubuntu.com/3739-2	2022-04-08
https://access.redhat.com/security/cve/CVE-2016-9318	2018-08-16
https://bugzilla.redhat.com/show_bug.cgi?id=1395609	2018-08-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Xmlsoft Search vendor "Xmlsoft"	Libxml2 Search vendor "Xmlsoft" for product "Libxml2"	<= 2.9.4 Search vendor "Xmlsoft" for product "Libxml2" and version " <= 2.9.4"	-	Affected	in	Xmlsec Project Search vendor "Xmlsec Project"	Xmlsec Search vendor "Xmlsec Project" for product "Xmlsec"	<= 1.2.23 Search vendor "Xmlsec Project" for product "Xmlsec" and version " <= 1.2.23"	-	Safe
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected