What’s Vulnerable › Vulnerabilities

CVE-2020-7059: OOB read in php_strip_tags_ex

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-02-10 · updated 2026-06-17
• Weakness: CWE-125

Description

When using fgetss() function to read data with stripping tags, in PHP versions 7.2.x below 7.2.27, 7.3.x below 7.3.14 and 7.4.x below 7.4.2 it is possible to supply data that will cause this function to read past the allocated buffer. This may lead to information disclosure or crash.

Affected products

• Debian Linux: 8.0
• openSUSE Leap: 15.1
• Oracle Corporation Communications Diameter Signaling Router (DSR): from 8.0 through 8.4
• PHP: from 7.2.0 before 7.2.27; from 7.3.0 before 7.3.14; from 7.4.0 before 7.4.2 — fixed in 7.2.27, 7.3.14, 7.4.2
• Tenable.sc: before 5.19.0 — fixed in 5.19.0

How to fix

Upgrade to a fixed version: PHP 7.2.27, 7.3.14, 7.4.2; Tenable.sc 5.19.0. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.html
• https://bugs.php.net/bug.php?id=79099
• https://lists.debian.org/debian-lts-announce/2020/02/msg00030.html
• https://seclists.org/bugtraq/2020/Feb/27
• https://seclists.org/bugtraq/2020/Feb/31
• https://seclists.org/bugtraq/2021/Jan/3
• https://security.gentoo.org/glsa/202003-57
• https://security.netapp.com/advisory/ntap-20200221-0002/
• https://usn.ubuntu.com/4279-1/
• https://www.debian.org/security/2020/dsa-4626
• https://www.debian.org/security/2020/dsa-4628
• https://www.oracle.com/security-alerts/cpuApr2021.html

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