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CVE-2017-12932

Date: August 17, 2017

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.

Language: C

Severity Score

Related Resources (12)

http://www.securityfocus.com/bid/100427
https://security.gentoo.org/glsa/201709-21
https://people.canonical.com/~ubuntu-security/cve/CVE-2017-12932
https://nvd.nist.gov/vuln/detail/CVE-2017-12932
https://www.debian.org/security/2018/dsa-4080
https://security.netapp.com/advisory/ntap-20180112-0001/
https://bugs.php.net/bug.php?id=74103
http://php.net/ChangeLog-7.php
https://access.redhat.com/errata/RHSA-2019:2519
https://access.redhat.com/errata/RHSA-2018:1296
https://github.com/php/php-src/commit/1a23ebc1fff59bf480ca92963b36eba5c1b904c4
https://www.mend.io/vulnerability-database/CVE-2017-12932

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:
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

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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