What’s Vulnerable › Vulnerabilities
CVE-2020-7067: OOB Read in urldecode()
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 4.3% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2020-04-27 · updated 2026-06-17
- Weakness: CWE-125
Description
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 products
- Debian Linux: 9.0, 10.0
- Oracle Corporation Communications Diameter Signaling Router (DSR): from 8.0.0.0 through 8.4.0.5
- PHP: from 7.2.0 before 7.2.30; from 7.3.0 before 7.3.17; from 7.4.0 before 7.4.5 — fixed in 7.2.30, 7.3.17, 7.4.5
- Tenable.sc: before 5.19.0 — fixed in 5.19.0
How to fix
Upgrade to a fixed version: PHP 7.2.30, 7.3.17, 7.4.5; Tenable.sc 5.19.0. Check the vendor advisory for mitigations.
References
- https://bugs.php.net/bug.php?id=79465
- https://security.netapp.com/advisory/ntap-20200504-0001/
- https://www.debian.org/security/2020/dsa-4717
- https://www.debian.org/security/2020/dsa-4719
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://www.tenable.com/security/tns-2021-14
- https://bugs.php.net/bug.php?id=79465
- https://security.netapp.com/advisory/ntap-20200504-0001/
- https://www.debian.org/security/2020/dsa-4717
- https://www.debian.org/security/2020/dsa-4719
- https://www.oracle.com/security-alerts/cpuApr2021.html
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