CVE-2017-12933
Critical
CVE-2017-12933
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.
Exploit probability
6.9%
Published
August 18, 2017
Required by
Not available
Last source change
August 7, 2026
02 / AFFECTED SOFTWARE
Affected packages
42 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2017-12933
View original source
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.
05 / REFERENCES
Further evidence
- http://php.net/ChangeLog-5.php
- http://php.net/ChangeLog-7.php
- http://www.securityfocus.com/bid/99490
- https://access.redhat.com/errata/RHSA-2018:1296
- https://bugs.php.net/bug.php?id=74111
- https://usn.ubuntu.com/3566-1/
- https://usn.ubuntu.com/3566-2/
- https://www.debian.org/security/2018/dsa-4080
- https://www.debian.org/security/2018/dsa-4081