CVE-2016-5771

high-risk
Published 2016-08-07

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.

Do I need to act?

~
9.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (4)

Php

Affected Vendors

Php Debian Opensuse

References (24)

Patch http://github.com/php/php-src/commit/3f627e580acfdaf0595ae3b115b8bec677f203ee?w=...
Broken Link http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html
Mailing List http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html
Patch http://php.net/ChangeLog-5.php
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-2750.html
Third Party Advisory http://www.debian.org/security/2016/dsa-3618
Mailing List http://www.openwall.com/lists/oss-security/2016/06/23/4
Third Party Advisory http://www.securityfocus.com/bid/91401
Exploit https://bugs.php.net/bug.php?id=72433
Third Party Advisory https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c...
Third Party Advisory https://support.apple.com/HT207170
Patch http://github.com/php/php-src/commit/3f627e580acfdaf0595ae3b115b8bec677f203ee?w=...
Broken Link http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html
Mailing List http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html
Patch http://php.net/ChangeLog-5.php
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-2750.html
Third Party Advisory http://www.debian.org/security/2016/dsa-3618
Mailing List http://www.openwall.com/lists/oss-security/2016/06/23/4
and 4 more references
53
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 11/34 · Low
Exposure 10/34 · Low