CVE-2017-5340

php: Use of uninitialized memory in 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

Zend/zend_hash.c in PHP before 7.0.15 and 7.1.x before 7.1.1 mishandles certain cases that require large array allocations, which allows remote attackers to execute arbitrary code or cause a denial of service (integer overflow, uninitialized memory access, and use of arbitrary destructor function pointers) via crafted serialized data.

Zend/zend_hash.c en PHP en versiones anteriores a 7.0.15 y 7.1.x en versiones anteriores a 7.1.1 no maneja adecuadamente ciertos casos que requieren asignaciones de array grandes, lo que permite a atacantes remotos ejecutar código arbitrario o provocar una denegación de servicio (desbordamiento de enteros, acceso a memoria no inicializada y uso de punteros de la función de destructor arbitrarios) 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

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-01-11 CVE Reserved
2017-01-11 CVE Published
2023-07-08 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-190: Integer Overflow or Wraparound
CWE-456: Missing Initialization of a Variable

CAPEC

References (8)

URL	Tag	Source
http://www.securityfocus.com/bid/95371	Third Party Advisory
http://www.securitytracker.com/id/1037659	Third Party Advisory
https://security.netapp.com/advisory/ntap-20180112-0001	Third Party Advisory

URL	Date	SRC
https://bugs.php.net/bug.php?id=73832	2024-08-05

URL	Date	SRC
https://github.com/php/php-src/commit/4cc0286f2f3780abc6084bcdae5dce595daa3c12	2022-07-20

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2018:1296	2022-07-20
https://access.redhat.com/security/cve/CVE-2017-5340	2018-05-03
https://bugzilla.redhat.com/show_bug.cgi?id=1412631	2018-05-03

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"				>= 7.0.0 < 7.0.15 Search vendor "Php" for product "Php" and version " >= 7.0.0 < 7.0.15"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.1.0 < 7.1.1 Search vendor "Php" for product "Php" and version " >= 7.1.0 < 7.1.1"		-		Affected
Netapp Search vendor "Netapp"		Clustered Data Ontap Search vendor "Netapp" for product "Clustered Data Ontap"				-		-		Affected