Vulnerability Details : CVE-2016-7479
In all versions of PHP 7, during the unserialization process, resizing the 'properties' hash table of a serialized object may lead to use-after-free. A remote attacker may exploit this bug to gain arbitrary code execution.
Published
2017-01-12 00:59:00
Updated
2018-05-04 01:29:02
Vulnerability category: Memory Corruption
Products affected by CVE-2016-7479
- cpe:2.3:a:php:php:7.0.5:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.0.6:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.0.4:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.0.9:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.0.10:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.0.11:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.0.12:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.0.7:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.0.8:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.0.14:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:7.1.0:*:*:*:*:*:*:*
Threat overview for CVE-2016-7479
Top countries where our scanners detected CVE-2016-7479
Top open port discovered on systems with this issue
80
IPs affected by CVE-2016-7479 10,916
Threat actors abusing to this issue?
Yes
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affected by CVE-2016-7479!
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attack surface intelligence
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Exploit prediction scoring system (EPSS) score for CVE-2016-7479
0.97%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-7479
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2016-7479
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-7479
-
http://www.securitytracker.com/id/1037659
PHP Multiple Flaws Let Remote and Local Users Obtain Potentially Sensitive Information, Deny Service, and Execute Arbitrary Code - SecurityTracker
-
http://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php-7
Check Point discovers three Zero-Day Vulnerabilities in web programming language PHP 7 - Check Point SoftwareThird Party Advisory
-
http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdf
Exploit;Technical Description;Third Party Advisory
-
https://bugs.php.net/bug.php?id=73092
PHP :: Sec Bug #73092 :: Unserialize use-after-free when resizing object's properties hash tableIssue Tracking;Permissions Required
-
http://www.securityfocus.com/bid/95151
PHP CVE-2016-7479 Denial of Service VulnerabilityThird Party Advisory;VDB Entry
-
https://access.redhat.com/errata/RHSA-2018:1296
RHSA-2018:1296 - Security Advisory - Red Hat Customer Portal
-
https://security.netapp.com/advisory/ntap-20180112-0001/
September 2017 PHP Vulnerabilities in NetApp Products | NetApp Product Security
-
https://www.youtube.com/watch?v=LDcaPstAuPk
YouTubeTechnical Description
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