In PHP before 5.6.31, an invalid free in the WDDX deserialization of boolean parameters…
Priority MEDIUM 43CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service, Code execution
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 8 fixed, 5 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416, CWE-502 and the CVSS impact.
Summary
In PHP before 5.6.31, an invalid free in the WDDX deserialization of boolean parameters could be used by attackers able to inject XML for deserialization to crash the PHP interpreter, related to an invalid free for an empty boolean element in ext/wddx/wddx.c.
Why it matters now
EPSS 0.06846 94th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 8 fixed, 5 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
Red Hat 1 advisory
- RHSA-2018:1296 Released 2018-05-03 · Red Hat rating Moderaterh-php70-php security, bug fix, and enhancement update
- Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-php70-php-7.0.27-1.el6, rh-php70-php-bcmath-7.0.27-1.el6, rh-php70-php-cli-7.0.27-1.el6 +28
- Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-php70-php-7.0.27-1.el7, rh-php70-php-bcmath-7.0.27-1.el7, rh-php70-php-cli-7.0.27-1.el7 +26
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) rh-php70-php-7.0.27-1.el6, rh-php70-php-bcmath-7.0.27-1.el6, rh-php70-php-cli-7.0.27-1.el6 +28
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3) rh-php70-php-7.0.27-1.el7, rh-php70-php-bcmath-7.0.27-1.el7, rh-php70-php-cli-7.0.27-1.el7 +26
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-php70-php-7.0.27-1.el7, rh-php70-php-bcmath-7.0.27-1.el7, rh-php70-php-cli-7.0.27-1.el7 +26
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) rh-php70-php-7.0.27-1.el7, rh-php70-php-bcmath-7.0.27-1.el7, rh-php70-php-cli-7.0.27-1.el7 +26
- Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-php70-php-7.0.27-1.el6, rh-php70-php-bcmath-7.0.27-1.el6, rh-php70-php-cli-7.0.27-1.el6 +28
- Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-php70-php-7.0.27-1.el7, rh-php70-php-bcmath-7.0.27-1.el7, rh-php70-php-cli-7.0.27-1.el7 +26
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat OpenShift Enterprise 2 | Affected | No fix planned: Will not fix |
| Red Hat Software Collections | Affected | No fix planned: Will not fix |
| Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3) | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2018:1296 |
Not affected: 1 product
- Red Hat Software Collections
Timeline
- 2026-10-02 Threatist record created from CVE-2017-11143
- 2026-10-03 Alias added: GHSA-2q66-g93m-c6wv
References
More Php vulnerabilities
- TI-2024-04260 Argument Injection in PHP-CGI KEVCVSS 3.1CRITICAL 9.8
- TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2012-01607 sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI… KEVCVSS 3.1CRITICAL 9.8
- TI-2026-78794 PHP remote code execution via stale global state KEVCVSS 4.0CRITICAL 9.2
- TI-2026-78793 Out-of-memory handling flaw in PHP allows remote code execution KEVCVSS 4.0CRITICAL 9.2
- TI-2015-00205 Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and… CVSS 2.0HIGH 10.0
Sources
- CVE-2017-11143 · CVE Program
- CVE-2017-11143 · NVD
- FIRST EPSS
- GHSA-2q66-g93m-c6wv · GitHub Advisory Database · CC BY 4.0
- CVE-2017-11143 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences