CVE-2016-7480
CRITICAL severity · CVSS 9.8 · Memory corruption
9.8CVSS CRITICAL
Summary
The SplObjectStorage unserialize implementation in ext/spl/spl_observer.c in PHP before 7.0.12 does not verify that a key is an object, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized memory access) via crafted serialized data.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)42%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://bugs.php.net/bug.php?id=73257 ↗
Additional information
- NVD record
- https://bugs.php.net/bug.php?id=73257Patch
- https://github.com/php/php-src/commit/61cdd1255d5b9c8453be71aacbbf682796ac77d4Patch
- http://php.net/ChangeLog-7.phpAdvisory
- http://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php-7Advisory
- http://www.securityfocus.com/bid/95152Advisory
- https://security.netapp.com/advisory/ntap-20180112-0001/Advisory
- https://www.youtube.com/watch?v=LDcaPstAuPkAdvisory
- http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdfAdvisory