CVE-2017-12933

9.8 CRITICAL
Published: August 18, 2017 Modified: May 13, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://php.net/ChangeLog-5.php
Source: cve@mitre.org
Release Notes Vendor Advisory
http://php.net/ChangeLog-7.php
Source: cve@mitre.org
Release Notes Vendor Advisory
http://www.securityfocus.com/bid/99490
Source: cve@mitre.org
Third Party Advisory VDB Entry
https://bugs.php.net/bug.php?id=74111
Source: cve@mitre.org
Vendor Advisory
https://usn.ubuntu.com/3566-1/
Source: cve@mitre.org
https://usn.ubuntu.com/3566-2/
Source: cve@mitre.org
http://php.net/ChangeLog-5.php
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes Vendor Advisory
http://php.net/ChangeLog-7.php
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes Vendor Advisory
http://www.securityfocus.com/bid/99490
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:1296
Source: af854a3a-2127-422b-91ae-364da2661108
https://bugs.php.net/bug.php?id=74111
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://usn.ubuntu.com/3566-1/
Source: af854a3a-2127-422b-91ae-364da2661108
https://usn.ubuntu.com/3566-2/
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.debian.org/security/2018/dsa-4080
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.debian.org/security/2018/dsa-4081
Source: af854a3a-2127-422b-91ae-364da2661108

18 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
13.0%
94th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

php