High severity · published Aug 18, 2017
CVE-2017-12934
ext/standard/var_unserializer.re in PHP 7.0.x before 7.0.21 and 7.1.x before 7.1.7 is prone to a heap use after free while unserializing untrusted data, related to the…
7.5
CVSS
3.6%
EPSS
No
On KEV
Description
ext/standard/var_unserializer.re in PHP 7.0.x before 7.0.21 and 7.1.x before 7.1.7 is prone to a heap use after free while unserializing untrusted data, related to the zval_get_type function in Zend/zend_types.h. Exploitation of this issue can have an unspecified impact on the integrity of PHP.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.6% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PH
PHP · PHP
7.0.0; 7.0.1; 7.0.2; 7.0.3; 7.0.4; 7.0.5; +22 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-12934
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-12934
Vendor Advisory
http://php.net/ChangeLog-7.php
Third Party Advisory
http://www.securityfocus.com/bid/100428
access.redhat.com
https://access.redhat.com/errata/RHSA-2018:1296
Issue Tracking
https://bugs.php.net/bug.php?id=74101
www.debian.org
https://www.debian.org/security/2018/dsa-4080
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