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.
References (9)
Core 9
Core References
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:1296
Release Notes, Vendor Advisory x_refsource_confirm
http://php.net/ChangeLog-5.php
Vendor Advisory x_refsource_confirm
https://bugs.php.net/bug.php?id=74111
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2018/dsa-4081
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2018/dsa-4080
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3566-1/
Release Notes, Vendor Advisory x_refsource_confirm
http://php.net/ChangeLog-7.php
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/99490
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3566-2/
Scores
CVSS v3
9.8
EPSS
0.1303
EPSS Percentile
94.2%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-125
Status
published
Products (29)
php/php
7.0.0
php/php
7.0.1
php/php
7.0.2
php/php
7.0.3
php/php
7.0.4
php/php
7.0.5
php/php
7.0.6
php/php
7.0.7
php/php
7.0.8
php/php
7.0.9
... and 19 more
Published
Aug 18, 2017
Tracked Since
Feb 18, 2026