CVE-2016-5771

php: Use After Free Vulnerability in PHP's GC algorithm and unserialize

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

spl_array.c in the SPL extension in PHP before 5.5.37 and 5.6.x before 5.6.23 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and application crash) via crafted serialized data.

spl_array.c en la extension SPL en PHP en versiones anteriores a 5.5.37 y 5.6.x en versiones anteriores a 5.6.23 interactúa incorrectamente con la implementación no serializada y la recolección de basura, lo que permite a atacantes remotos ejecutar código arbitrario o provocar una denegación de servicio (uso después de liberación y caída de aplicación) a través de datos serializados manipulados.

*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

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-06-23 CVE Reserved
2016-06-26 CVE Published
2024-04-27 EPSS Updated
2024-08-06 CVE Updated
2024-08-06 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-416: Use After Free

CAPEC

References (14)

URL	Tag	Source
http://www.securityfocus.com/bid/91401	Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731	Third Party Advisory
https://support.apple.com/HT207170	Third Party Advisory

URL	Date	SRC
https://bugs.php.net/bug.php?id=72433	2024-08-06

URL	Date	SRC
http://github.com/php/php-src/commit/3f627e580acfdaf0595ae3b115b8bec677f203ee?w=1	2022-07-20
http://php.net/ChangeLog-5.php	2022-07-20
http://www.openwall.com/lists/oss-security/2016/06/23/4	2022-07-20

URL	Date	SRC
http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html	2022-07-20
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html	2022-07-20
http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html	2022-07-20
http://rhn.redhat.com/errata/RHSA-2016-2750.html	2022-07-20
http://www.debian.org/security/2016/dsa-3618	2022-07-20
https://access.redhat.com/security/cve/CVE-2016-5771	2016-11-15
https://bugzilla.redhat.com/show_bug.cgi?id=1351173	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"				< 5.5.37 Search vendor "Php" for product "Php" and version " < 5.5.37"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 5.6.0 < 5.6.23 Search vendor "Php" for product "Php" and version " >= 5.6.0 < 5.6.23"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.0.0 < 7.0.8 Search vendor "Php" for product "Php" and version " >= 7.0.0 < 7.0.8"		-		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
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected