CVE-2017-11143
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.85%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 6.85% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-416, CWE-502
- Affected
- php/php
- Source
- cve@mitre.org
EPSS 6.8% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://openwall.com/lists/oss-security/2017/07/10/6Mailing List, Patch, Third Party Advisory
- http://php.net/ChangeLog-5.phpRelease Notes, Vendor Advisory
- http://www.securityfocus.com/bid/99553
- https://access.redhat.com/errata/RHSA-2018:1296
- https://bugs.php.net/bug.php?id=74145Issue Tracking, Patch, Vendor Advisory
- https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=2aae60461c2ff7b7fbcdd194c789ac841d0747d7
- https://security.netapp.com/advisory/ntap-20180112-0001/
- https://www.debian.org/security/2018/dsa-4081
- https://www.tenable.com/security/tns-2017-12
- http://openwall.com/lists/oss-security/2017/07/10/6Mailing List, Patch, Third Party Advisory
- http://php.net/ChangeLog-5.phpRelease Notes, Vendor Advisory
- http://www.securityfocus.com/bid/99553
- https://access.redhat.com/errata/RHSA-2018:1296
- https://bugs.php.net/bug.php?id=74145Issue Tracking, Patch, Vendor Advisory
- https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=2aae60461c2ff7b7fbcdd194c789ac841d0747d7
- https://security.netapp.com/advisory/ntap-20180112-0001/
- https://www.debian.org/security/2018/dsa-4081
- https://www.tenable.com/security/tns-2017-12
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.