What’s Vulnerable › Vulnerabilities

CVE-2018-17082

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-09-16 · updated 2026-06-17
• Weakness: CWE-79

Description

The Apache2 component in PHP before 5.6.38, 7.0.x before 7.0.32, 7.1.x before 7.1.22, and 7.2.x before 7.2.10 allows XSS via the body of a "Transfer-Encoding: chunked" request, because the bucket brigade is mishandled in the php_handler function in sapi/apache2handler/sapi_apache2.c.

Affected products

• Debian Linux: 8.0, 9.0
• NetApp Storage Automation Store: all versions
• PHP: before 5.6.38; from 7.0.0 before 7.0.32; from 7.1.0 before 7.1.22; from 7.2.0 before 7.2.10 — fixed in 5.6.38, 7.0.32, 7.1.22, 7.2.10

How to fix

Upgrade to a fixed version: PHP 5.6.38, 7.0.32, 7.1.22, 7.2.10. Check the vendor advisory for mitigations.

References

• http://php.net/ChangeLog-5.php
• http://php.net/ChangeLog-7.php
• https://access.redhat.com/errata/RHSA-2019:2519
• https://bugs.php.net/bug.php?id=76582
• https://github.com/php/php-src/commit/23b057742e3cf199612fa8050ae86cae675e214e
• https://lists.debian.org/debian-lts-announce/2018/09/msg00020.html
• https://security.gentoo.org/glsa/201812-01
• https://security.netapp.com/advisory/ntap-20180924-0001/
• https://www.debian.org/security/2018/dsa-4353
• https://www.tenable.com/security/tns-2019-07
• http://php.net/ChangeLog-5.php
• http://php.net/ChangeLog-7.php

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