CVE-2017-12934
Published: 18 August 2017
ext/standard/var_unserializer.re in PHP 7.0.x before 7.0.21 and 7.1.x before 7.1.7 is prone to a heap use after free while unserializing untrusted data, related to the zval_get_type function in Zend/zend_types.h. Exploitation of this issue can have an unspecified impact on the integrity of PHP.
Notes
| Author | Note |
|---|---|
| mdeslaur | php 5.x not affected as per bug |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
php5 Launchpad, Ubuntu, Debian |
trusty |
Not vulnerable
(code not present)
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
php7.0 Launchpad, Ubuntu, Debian |
trusty |
Does not exist
|
| upstream |
Released
(7.0.21)
|
|
| xenial |
Not vulnerable
(7.0.22-0ubuntu0.16.04.1)
|
|
| zesty |
Not vulnerable
(7.0.22-0ubuntu0.17.04.1)
|
|
|
php7.1 Launchpad, Ubuntu, Debian |
trusty |
Does not exist
|
| upstream |
Released
(7.1.7)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |