CVE-2020-7067

OOB Read in urldecode()

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In PHP versions 7.2.x below 7.2.30, 7.3.x below 7.3.17 and 7.4.x below 7.4.5, if PHP is compiled with EBCDIC support (uncommon), urldecode() function can be made to access locations past the allocated memory, due to erroneously using signed numbers as array indexes.

En PHP versiones 7.2.x por debajo de 7.2.30, versiones 7.3.x debajo de 7.3.17 y versiones 7.4.x por debajo de 7.4.5, si PHP es compilado con soporte EBCDIC (poco común), la función urldecode() puede ser hecha para acceder a ubicaciones más allá del memoria asignada, debido al uso erróneo de números con signo como índices de matriz.

*Credits: bigshaq at wearehackerone dot com

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-01-15 CVE Reserved
2020-04-27 CVE Published
2024-08-08 EPSS Updated
2024-09-17 CVE Updated
2024-09-17 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-125: Out-of-bounds Read
CWE-196: Unsigned to Signed Conversion Error

CAPEC

References (7)

URL	Tag	Source
https://security.netapp.com/advisory/ntap-20200504-0001	Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html	Not Applicable
https://www.oracle.com/security-alerts/cpuoct2020.html	Third Party Advisory

URL	Date	SRC
https://bugs.php.net/bug.php?id=79465	2024-09-17

URL	Date	SRC
https://www.tenable.com/security/tns-2021-14	2022-05-16

URL	Date	SRC
https://www.debian.org/security/2020/dsa-4717	2022-05-16
https://www.debian.org/security/2020/dsa-4719	2022-05-16

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"				>= 7.2.0 < 7.2.30 Search vendor "Php" for product "Php" and version " >= 7.2.0 < 7.2.30"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.3.0 < 7.3.17 Search vendor "Php" for product "Php" and version " >= 7.3.0 < 7.3.17"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.4.0 < 7.4.5 Search vendor "Php" for product "Php" and version " >= 7.4.0 < 7.4.5"		-		Affected
Tenable Search vendor "Tenable"		Tenable.sc Search vendor "Tenable" for product "Tenable.sc"				< 5.19.0 Search vendor "Tenable" for product "Tenable.sc" and version " < 5.19.0"		-		Affected
Oracle Search vendor "Oracle"		Communications Diameter Signaling Router Search vendor "Oracle" for product "Communications Diameter Signaling Router"				>= 8.0.0.0 <= 8.4.0.5 Search vendor "Oracle" for product "Communications Diameter Signaling Router" and version " >= 8.0.0.0 <= 8.4.0.5"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected