CVE-2017-12933
high-risk
Published 2017-08-18
The finish_nested_data function in ext/standard/var_unserializer.re in PHP before 5.6.31, 7.0.x before 7.0.21, and 7.1.x before 7.1.7 is prone to a buffer over-read while unserializing untrusted data. Exploitation of this issue can have an unspecified impact on the integrity of PHP.
Do I need to act?
!
20.5% chance of exploitation in next 30 days
EPSS score — higher than 79% of all CVEs
-
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 (20)
Affected Vendors
References (18)
Release Notes
http://php.net/ChangeLog-5.php
Release Notes
http://php.net/ChangeLog-7.php
Third Party Advisory
http://www.securityfocus.com/bid/99490
Vendor Advisory
https://bugs.php.net/bug.php?id=74111
Release Notes
http://php.net/ChangeLog-5.php
Release Notes
http://php.net/ChangeLog-7.php
Third Party Advisory
http://www.securityfocus.com/bid/99490
Vendor Advisory
https://bugs.php.net/bug.php?id=74111
68
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
14/34 · Moderate
Exposure
22/34 · High