National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-12932 Detail

Current Description

ext/standard/var_unserializer.re in PHP 7.0.x through 7.0.22 and 7.1.x through 7.1.8 is prone to a heap use after free while unserializing untrusted data, related to improper use of the hash API for key deletion in a situation with an invalid array size. Exploitation of this issue can have an unspecified impact on the integrity of PHP.

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

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 9.8 CRITICAL
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 3.9


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 v2.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Insufficient_Info
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://php.net/ChangeLog-7.php Release Notes Vendor Advisory
http://www.securityfocus.com/bid/100427 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:1296
https://bugs.php.net/bug.php?id=74103 Issue Tracking Vendor Advisory
https://github.com/php/php-src/commit/1a23ebc1fff59bf480ca92963b36eba5c1b904c4 Patch Third Party Advisory
https://security.gentoo.org/glsa/201709-21
https://security.netapp.com/advisory/ntap-20180112-0001/
https://www.debian.org/security/2018/dsa-4080

Technical Details

Vulnerability Type (View All)

Change History

6 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-12932
NVD Published Date:
08/17/2017
NVD Last Modified:
05/03/2018