CVE-2015-8866

php: libxml_disable_entity_loader setting is shared between threads

Severity Score

9.6

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

ext/libxml/libxml.c in PHP before 5.5.22 and 5.6.x before 5.6.6, when PHP-FPM is used, does not isolate each thread from libxml_disable_entity_loader changes in other threads, which allows remote attackers to conduct XML External Entity (XXE) and XML Entity Expansion (XEE) attacks via a crafted XML document, a related issue to CVE-2015-5161.

ext/libxml/libxml.c en PHP en versiones anteriores a 5.5.22 y 5.6.x en versiones anteriores a 5.6.6, cuando se utiliza PHP-FPM, no aisla cada hilo de cambios libxml_disable_entity_loader en otros hilos, lo que permite a atacantes remotos llevar a cabo ataques XML External Entity (XXE) y XML Entity Expansion (XEE) a través de un documento XML manipulado, un problema relacionado con la CVE-2015-5161.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-04-23 CVE Reserved
2016-05-22 CVE Published
2024-03-14 EPSS Updated
2024-08-06 CVE Updated
2024-08-06 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-611: Improper Restriction of XML External Entity Reference

CAPEC

References (14)

URL	Tag	Source
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=de31324c221c1791b26350ba106cc26bad23ace9	X_refsource_confirm
http://www.securityfocus.com/bid/87470	Third Party Advisory

URL	Date	SRC
https://bugs.php.net/bug.php?id=64938	2024-08-06

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2016/04/24/1	2023-11-07
https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1509817	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00031.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00033.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00056.html	2023-11-07
http://rhn.redhat.com/errata/RHSA-2016-2750.html	2023-11-07
http://www.php.net/ChangeLog-5.php	2023-11-07
http://www.ubuntu.com/usn/USN-2952-1	2023-11-07
http://www.ubuntu.com/usn/USN-2952-2	2023-11-07
https://access.redhat.com/security/cve/CVE-2015-8866	2016-11-15
https://bugzilla.redhat.com/show_bug.cgi?id=1330418	2016-11-15

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 5.5.0 < 5.5.22 Search vendor "Php" for product "Php" and version " >= 5.5.0 < 5.5.22"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 5.6.0 < 5.6.6 Search vendor "Php" for product "Php" and version " >= 5.6.0 < 5.6.6"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.0.0 < 7.0.27 Search vendor "Php" for product "Php" and version " >= 7.0.0 < 7.0.27"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.1.0 < 7.1.13 Search vendor "Php" for product "Php" and version " >= 7.1.0 < 7.1.13"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.2.0 < 7.2.1 Search vendor "Php" for product "Php" and version " >= 7.2.0 < 7.2.1"		-		Affected
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"		-		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"				15.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "15.10"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				42.1 Search vendor "Opensuse" for product "Leap" and version "42.1"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				13.2 Search vendor "Opensuse" for product "Opensuse" and version "13.2"		-		Affected
Suse Search vendor "Suse"		Linux Enterprise Module For Web Scripting Search vendor "Suse" for product "Linux Enterprise Module For Web Scripting"				12 Search vendor "Suse" for product "Linux Enterprise Module For Web Scripting" and version "12"		-		Affected
Suse Search vendor "Suse"		Linux Enterprise Software Development Kit Search vendor "Suse" for product "Linux Enterprise Software Development Kit"				12 Search vendor "Suse" for product "Linux Enterprise Software Development Kit" and version "12"		-		Affected
Suse Search vendor "Suse"		Linux Enterprise Software Development Kit Search vendor "Suse" for product "Linux Enterprise Software Development Kit"				12 Search vendor "Suse" for product "Linux Enterprise Software Development Kit" and version "12"		sp1		Affected