CVE Vulnerabilities

CVE-2017-11143

Use After Free

Published: Jul 10, 2017 | Modified: Apr 20, 2025
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
5.9 MODERATE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM

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.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Php Php * 5.6.30 (including)
Red Hat Software Collections for Red Hat Enterprise Linux 6 RedHat rh-php70-php-0:7.0.27-1.el6 *
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS RedHat rh-php70-php-0:7.0.27-1.el6 *
Red Hat Software Collections for Red Hat Enterprise Linux 7 RedHat rh-php70-php-0:7.0.27-1.el7 *
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS RedHat rh-php70-php-0:7.0.27-1.el7 *
Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS RedHat rh-php70-php-0:7.0.27-1.el7 *
Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS RedHat rh-php70-php-0:7.0.27-1.el7 *
Php5 Ubuntu esm-infra-legacy/trusty *
Php5 Ubuntu trusty *
Php5 Ubuntu trusty/esm *
Php7.0 Ubuntu yakkety *

Potential Mitigations

References