OOB Read in urldecode()
CVE-2020-7067

7.5HIGH

Key Information:

Vendor

PHP Group

Status
PHP
Vendor
CVE Published:
27 April 2020

What is CVE-2020-7067?

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.

Affected Version(s)

PHP 7.2.x below 7.2.30

PHP 7.3.x below 7.3.17 and 7.4.x below 7.4.5

References

https://www.debian.org/security/2020/dsa-4717
vendor-advisoryx_refsource_DEBIAN
https://www.debian.org/security/2020/dsa-4719
vendor-advisoryx_refsource_DEBIAN
https://www.oracle.com/security-alerts/cpuoct2020.html
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

bigshaq at wearehackerone dot com
.