Double free vulnerability in the _php_mb_regex_ereg_replace_exec function in php_mbregex.c in the mbstring extension in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) by leveraging a callback exception.
Weakness
The product calls free() twice on the same memory address.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Php | Php | * | 5.5.36 (including) |
| Php | Php | 5.6.0-alpha1 (including) | 5.6.0-alpha1 (including) |
| Php | Php | 5.6.0-alpha2 (including) | 5.6.0-alpha2 (including) |
| Php | Php | 5.6.0-alpha3 (including) | 5.6.0-alpha3 (including) |
| Php | Php | 5.6.0-alpha4 (including) | 5.6.0-alpha4 (including) |
| Php | Php | 5.6.0-alpha5 (including) | 5.6.0-alpha5 (including) |
| Php | Php | 5.6.0-beta1 (including) | 5.6.0-beta1 (including) |
| Php | Php | 5.6.0-beta2 (including) | 5.6.0-beta2 (including) |
| Php | Php | 5.6.0-beta3 (including) | 5.6.0-beta3 (including) |
| Php | Php | 5.6.0-beta4 (including) | 5.6.0-beta4 (including) |
| Php | Php | 5.6.1 (including) | 5.6.1 (including) |
| Php | Php | 5.6.2 (including) | 5.6.2 (including) |
| Php | Php | 5.6.3 (including) | 5.6.3 (including) |
| Php | Php | 5.6.4 (including) | 5.6.4 (including) |
| Php | Php | 5.6.5 (including) | 5.6.5 (including) |
| Php | Php | 5.6.6 (including) | 5.6.6 (including) |
| Php | Php | 5.6.7 (including) | 5.6.7 (including) |
| Php | Php | 5.6.8 (including) | 5.6.8 (including) |
| Php | Php | 5.6.9 (including) | 5.6.9 (including) |
| Php | Php | 5.6.10 (including) | 5.6.10 (including) |
| Php | Php | 5.6.11 (including) | 5.6.11 (including) |
| Php | Php | 5.6.12 (including) | 5.6.12 (including) |
| Php | Php | 5.6.13 (including) | 5.6.13 (including) |
| Php | Php | 5.6.14 (including) | 5.6.14 (including) |
| Php | Php | 5.6.15 (including) | 5.6.15 (including) |
| Php | Php | 5.6.16 (including) | 5.6.16 (including) |
| Php | Php | 5.6.17 (including) | 5.6.17 (including) |
| Php | Php | 5.6.18 (including) | 5.6.18 (including) |
| Php | Php | 5.6.19 (including) | 5.6.19 (including) |
| Php | Php | 5.6.20 (including) | 5.6.20 (including) |
| Php | Php | 5.6.21 (including) | 5.6.21 (including) |
| Php | Php | 5.6.22 (including) | 5.6.22 (including) |
| Php | Php | 7.0.0 (including) | 7.0.0 (including) |
| Php | Php | 7.0.1 (including) | 7.0.1 (including) |
| Php | Php | 7.0.2 (including) | 7.0.2 (including) |
| Php | Php | 7.0.3 (including) | 7.0.3 (including) |
| Php | Php | 7.0.4 (including) | 7.0.4 (including) |
| Php | Php | 7.0.5 (including) | 7.0.5 (including) |
| Php | Php | 7.0.6 (including) | 7.0.6 (including) |
| Php | Php | 7.0.7 (including) | 7.0.7 (including) |
| Red Hat Enterprise Linux 7 | RedHat | php-0:5.4.16-42.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | RedHat | rh-php56-0:2.3-1.el6 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | RedHat | rh-php56-php-0:5.6.25-1.el6 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | RedHat | rh-php56-php-pear-1:1.9.5-4.el6 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | RedHat | rh-php56-0:2.3-1.el6 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | RedHat | rh-php56-php-0:5.6.25-1.el6 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | RedHat | rh-php56-php-pear-1:1.9.5-4.el6 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | RedHat | rh-php56-0:2.3-1.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | RedHat | rh-php56-php-0:5.6.25-1.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | RedHat | rh-php56-php-pear-1:1.9.5-4.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | RedHat | rh-php56-0:2.3-1.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | RedHat | rh-php56-php-0:5.6.25-1.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | RedHat | rh-php56-php-pear-1:1.9.5-4.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS | RedHat | rh-php56-0:2.3-1.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS | RedHat | rh-php56-php-0:5.6.25-1.el7 | * |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS | RedHat | rh-php56-php-pear-1:1.9.5-4.el7 | * |
| Php5 | Ubuntu | esm-infra-legacy/trusty | * |
| Php5 | Ubuntu | trusty | * |
| Php5 | Ubuntu | trusty/esm | * |
| Php5 | Ubuntu | wily | * |
| Php7.0 | Ubuntu | esm-infra/xenial | * |
| Php7.0 | Ubuntu | upstream | * |
| Php7.0 | Ubuntu | xenial | * |
Potential Mitigations
References
- http://github.com/php/php-src/commit/5b597a2e5b28e2d5a52fc1be13f425f08f47cb62?w=1
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html
- http://php.net/ChangeLog-5.php
- http://php.net/ChangeLog-7.php
- http://rhn.redhat.com/errata/RHSA-2016-2598.html
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://www.debian.org/security/2016/dsa-3618
- http://www.openwall.com/lists/oss-security/2016/06/23/4
- http://www.securityfocus.com/bid/91396
- https://bugs.php.net/bug.php?id=72402
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
- https://support.apple.com/HT207170
- http://github.com/php/php-src/commit/5b597a2e5b28e2d5a52fc1be13f425f08f47cb62?w=1
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html
- http://php.net/ChangeLog-5.php
- http://php.net/ChangeLog-7.php
- http://rhn.redhat.com/errata/RHSA-2016-2598.html
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://www.debian.org/security/2016/dsa-3618
- http://www.openwall.com/lists/oss-security/2016/06/23/4
- http://www.securityfocus.com/bid/91396
- https://bugs.php.net/bug.php?id=72402
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
- https://support.apple.com/HT207170