// For flags

CVE-2016-9318

libxml2: XML External Entity vulnerability

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*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.

Matias Brutti discovered that libxml2 incorrectly handled certain XML files. An attacker could possibly use this issue to expose sensitive information. It was discovered that libxml2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS. It was discovered that libxml2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. Various other issues were also addressed.

*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
  • 2025-08-13 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-611: Improper Restriction of XML External Entity Reference
CAPEC
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