UBUNTU-CVE-2017-12933

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2017-12933
Published: 17 Aug 2017, 00:00
Last modified:22 Apr 2026, 11:14

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
3.0 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

17 Aug 2017, 00:00
Published
Vulnerability first disclosed
22 Apr 2026, 11:14
Last Modified
Vulnerability information updated

Description

The finish_nested_data function in ext/standard/var_unserializer.re in PHP before 5.6.31, 7.0.x before 7.0.21, and 7.1.x before 7.1.7 is prone to a buffer over-read while unserializing untrusted data. Exploitation of this issue can have an unspecified impact on the integrity of PHP.

CVSS Metrics

  • v3.0•CRITICAL•Score: 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • ubuntu•php5

    < 5.5.9+dfsg-1ubuntu4.23

References (6)