CVE-2017-12934

Advisory lineage Upstream: 0 Downstream: 4
Modified
Published: 18 Aug 2017, 03:00
Last modified:05 Aug 2024, 18:51

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.0 (nvd)
EPSS Score
0.41% LOW
0% probability -0.08%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Aug 2017, 03:00
Published
Vulnerability first disclosed
05 Aug 2024, 18:51
Last Modified
Vulnerability information updated

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 Metrics

  • v3.0•HIGH•Score: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:P/A:N

EPSS Trends

Current EPSS score: 0.41%• Percentile: 61%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • Unknown•PHP

    7.0.0 | 7.0.1 | 7.0.2 | 7.0.3 | 7.0.4 | 7.0.5 | 7.0.6 | 7.0.7 | 7.0.8 | 7.0.9 | 7.0.10 | 7.0.11 | 7.0.12 | 7.0.13 | 7.0.14 | 7.0.15 | 7.0.16 | 7.0.17 | 7.0.18 | 7.0.19 | 7.0.20 | 7.1.0 | 7.1.1 | 7.1.2 | 7.1.3 | 7.1.4 | 7.1.5 | 7.1.6

References (5)