CVE-2015-6834

PHP 5.4/5.5/5.6 - SplDoublyLinkedList 'Unserialize()' Use-After-Free

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Multiple use-after-free vulnerabilities in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 allow remote attackers to execute arbitrary code via vectors related to (1) the Serializable interface, (2) the SplObjectStorage class, and (3) the SplDoublyLinkedList class, which are mishandled during unserialization.

Múltiples vulnerabilidades de uso después de liberación de memoria en PHP en versiones anteriores a 5.4.45, 5.5.x en versiones anteriores a 5.5.29 y 5.6.x en versiones anteriores a 5.6.13 permite a atacantes remotos ejecutar código arbitrario a través de vectores relacionados con (1) la interfaz Serializable, (2) la clase SplObjectStorage y (3) la clase SplDoublyLinkedList, que no es correctamente manejado durante la deserialización.

A flaw was discovered in the way PHP performed object unserialization. Specially crafted input processed by the unserialize() function could cause a PHP application to crash or, possibly, execute arbitrary code.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-09-08 CVE Reserved
2015-09-09 First Exploit
2015-09-15 CVE Published
2024-06-15 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-416: Use After Free

CAPEC

References (12)

URL	Tag	Source
http://php.net/ChangeLog-5.php	X_refsource_confirm
http://www.securityfocus.com/bid/76649	Vdb Entry
http://www.securitytracker.com/id/1033548	Vdb Entry
https://bugs.php.net/bug.php?id=70172	X_refsource_confirm
https://bugs.php.net/bug.php?id=70365	X_refsource_confirm
https://bugs.php.net/bug.php?id=70366	X_refsource_confirm

URL	Date	SRC
https://www.exploit-db.com/exploits/38120	2015-09-09
https://www.exploit-db.com/exploits/38122	2015-09-09

URL	Date	SRC

URL	Date	SRC
http://www.debian.org/security/2015/dsa-3358	2023-11-07
https://security.gentoo.org/glsa/201606-10	2023-11-07
https://access.redhat.com/security/cve/CVE-2015-6834	2016-03-15
https://bugzilla.redhat.com/show_bug.cgi?id=1260642	2016-03-15

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"				<= 5.4.44 Search vendor "Php" for product "Php" and version " <= 5.4.44"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.1 Search vendor "Php" for product "Php" and version "5.5.1"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.2 Search vendor "Php" for product "Php" and version "5.5.2"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.3 Search vendor "Php" for product "Php" and version "5.5.3"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.4 Search vendor "Php" for product "Php" and version "5.5.4"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.5 Search vendor "Php" for product "Php" and version "5.5.5"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.6 Search vendor "Php" for product "Php" and version "5.5.6"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.7 Search vendor "Php" for product "Php" and version "5.5.7"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.8 Search vendor "Php" for product "Php" and version "5.5.8"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.9 Search vendor "Php" for product "Php" and version "5.5.9"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.10 Search vendor "Php" for product "Php" and version "5.5.10"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.11 Search vendor "Php" for product "Php" and version "5.5.11"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.12 Search vendor "Php" for product "Php" and version "5.5.12"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.13 Search vendor "Php" for product "Php" and version "5.5.13"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.14 Search vendor "Php" for product "Php" and version "5.5.14"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.15 Search vendor "Php" for product "Php" and version "5.5.15"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.16 Search vendor "Php" for product "Php" and version "5.5.16"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.17 Search vendor "Php" for product "Php" and version "5.5.17"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.18 Search vendor "Php" for product "Php" and version "5.5.18"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.19 Search vendor "Php" for product "Php" and version "5.5.19"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.20 Search vendor "Php" for product "Php" and version "5.5.20"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.21 Search vendor "Php" for product "Php" and version "5.5.21"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.22 Search vendor "Php" for product "Php" and version "5.5.22"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.23 Search vendor "Php" for product "Php" and version "5.5.23"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.24 Search vendor "Php" for product "Php" and version "5.5.24"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.25 Search vendor "Php" for product "Php" and version "5.5.25"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.26 Search vendor "Php" for product "Php" and version "5.5.26"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.27 Search vendor "Php" for product "Php" and version "5.5.27"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.28 Search vendor "Php" for product "Php" and version "5.5.28"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.0 Search vendor "Php" for product "Php" and version "5.6.0"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.1 Search vendor "Php" for product "Php" and version "5.6.1"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.2 Search vendor "Php" for product "Php" and version "5.6.2"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.3 Search vendor "Php" for product "Php" and version "5.6.3"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.4 Search vendor "Php" for product "Php" and version "5.6.4"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.5 Search vendor "Php" for product "Php" and version "5.6.5"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.6 Search vendor "Php" for product "Php" and version "5.6.6"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.7 Search vendor "Php" for product "Php" and version "5.6.7"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.8 Search vendor "Php" for product "Php" and version "5.6.8"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.9 Search vendor "Php" for product "Php" and version "5.6.9"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.10 Search vendor "Php" for product "Php" and version "5.6.10"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.11 Search vendor "Php" for product "Php" and version "5.6.11"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.12 Search vendor "Php" for product "Php" and version "5.6.12"		-		Affected