critical
CVE-2016-5771
php: Use After Free Vulnerability in PHP's GC algorithm and unserialize
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat5.6CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (medium), Amazon (medium), Ubuntu (low).
Description
spl_array.c in the SPL extension in PHP before 5.5.37 and 5.6.x before 5.6.23 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and application crash) via crafted serialized data.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| amazon linux 1 | php55, php55-bcmath, php55-cli and 60 more | 5.5.38-1.116.amzn1 and 1 more |
| debian 7 | php5 | 5.4.45-0+deb7u5 |
| debian 8 | php5 | 5.6.23+dfsg-0+deb8u1 |
| Red Hat | php, php-bcmath, php-cli and 25 more | no fix listed |
| ubuntu 14.04 | php5 | 5.5.9+dfsg-1ubuntu4.19 |
| ubuntu 14.04-ESM | php5 | 5.5.9+dfsg-1ubuntu4.19 |
Show all 95 entries from 6 sources
| Source | Package | Fixed in |
|---|---|---|
| amazon linux 1 | php55 | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-bcmath | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-cli | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-common | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-dba | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-debuginfo | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-devel | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-embedded | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-enchant | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-fpm | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-gd | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-gmp | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-imap | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-intl | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-ldap | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-mbstring | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-mcrypt | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-mssql | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-mysqlnd | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-odbc | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-opcache | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-pdo | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-pgsql | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-process | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-pspell | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-recode | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-snmp | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-soap | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-tidy | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-xml | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php55-xmlrpc | 5.5.38-1.116.amzn1 |
| amazon linux 1 | php56 | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-bcmath | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-cli | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-common | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-dba | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-dbg | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-debuginfo | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-devel | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-embedded | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-enchant | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-fpm | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-gd | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-gmp | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-imap | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-intl | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-ldap | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-mbstring | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-mcrypt | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-mssql | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-mysqlnd | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-odbc | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-opcache | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-pdo | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-pgsql | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-process | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-pspell | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-recode | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-snmp | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-soap | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-tidy | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-xml | 5.6.24-1.126.amzn1 |
| amazon linux 1 | php56-xmlrpc | 5.6.24-1.126.amzn1 |
| debian 7 | php5 | 5.4.45-0+deb7u5 |
| debian 8 | php5 | 5.6.23+dfsg-0+deb8u1 |
| Red Hat | php | no fix listed |
| Red Hat | php-bcmath | no fix listed |
| Red Hat | php-cli | no fix listed |
| Red Hat | php-common | no fix listed |
| Red Hat | php-dba | no fix listed |
| Red Hat | php-devel | no fix listed |
| Red Hat | php-embedded | no fix listed |
| Red Hat | php-enchant | no fix listed |
| Red Hat | php-fpm | no fix listed |
| Red Hat | php-gd | no fix listed |
| Red Hat | php-imap | no fix listed |
| Red Hat | php-intl | no fix listed |
| Red Hat | php-ldap | no fix listed |
| Red Hat | php-mbstring | no fix listed |
| Red Hat | php-mysql | no fix listed |
| Red Hat | php-mysqlnd | no fix listed |
| Red Hat | php-odbc | no fix listed |
| Red Hat | php-pdo | no fix listed |
| Red Hat | php-pgsql | no fix listed |
| Red Hat | php-process | no fix listed |
| Red Hat | php-pspell | no fix listed |
| Red Hat | php-recode | no fix listed |
| Red Hat | php-snmp | no fix listed |
| Red Hat | php-soap | no fix listed |
| Red Hat | php-tidy | no fix listed |
| Red Hat | php-xml | no fix listed |
| Red Hat | php-xmlrpc | no fix listed |
| Red Hat | php-zts | no fix listed |
| ubuntu 14.04 | php5 | 5.5.9+dfsg-1ubuntu4.19 |
| ubuntu 14.04-ESM | php5 | 5.5.9+dfsg-1ubuntu4.19 |
References
- http://github.com/php/php-src/commit/3f627e580acfdaf0595ae3b115b8bec677f203ee?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://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
All 16 references
- http://www.securityfocus.com/bid/91401
- https://access.redhat.com/security/cve/CVE-2016-5771
- https://bugs.php.net/bug.php?id=72433
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
- https://nvd.nist.gov/vuln/detail/CVE-2016-5771
- https://support.apple.com/HT207170
- https://ubuntu.com/security/notices/USN-3045-1
- https://www.cve.org/CVERecord?id=CVE-2016-5771