vulnwire
7.5high

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 un…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
7.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
3.6%
percentile 90%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

3.63% probability of exploitation in the next 30 days, higher than 90% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.07.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD2.05.0AV:N/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness
Technology feeds
PHP (RSS, critical only)

References

  • bugs.php.net /bug.php?id=74101 · x_refsource_CONFIRM, x_transferred
  • securityfocus.com /bid/100428 · vdb-entry, x_refsource_BID, x_transferred
  • access.redhat.com /errata/RHSA-2018:1296 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • debian.org /security/2018/dsa-4080 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • php.net /ChangeLog-7.php · x_refsource_CONFIRM, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.