National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-12933 Detail

Current 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.

Source:  MITRE      Last Modified:  08/17/2017      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2017-12933
Original release date:
08/17/2017
Last revised:
01/09/2018
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
9.8 Critical
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (legend)
Impact Score:
5.9
Exploitability Score:
3.9
CVSS Version 3 Metrics:
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High
CVSS Severity (version 2.0):
CVSS v2 Base Score:
7.5 HIGH
Vector:
(AV:N/AC:L/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore:
6.4
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Low
Authentication:
Not required to exploit
Impact Type:
Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://php.net/ChangeLog-5.php Release Notes; Vendor Advisory External Source CONFIRM http://php.net/ChangeLog-5.php
http://php.net/ChangeLog-7.php Release Notes; Vendor Advisory External Source CONFIRM http://php.net/ChangeLog-7.php
http://www.securityfocus.com/bid/99490 Third Party Advisory; VDB Entry External Source BID 99490
https://bugs.php.net/bug.php?id=74111 Vendor Advisory External Source CONFIRM https://bugs.php.net/bug.php?id=74111
https://www.debian.org/security/2018/dsa-4080 External Source DEBIAN DSA-4080
https://www.debian.org/security/2018/dsa-4081 External Source DEBIAN DSA-4081

Technical Details

Vulnerability Type (View All)

Change History 4 change records found - show changes