CVE-2017-12933 Memory corruption in n/a
A buffer over-read in PHP's unserializer allows attackers to cause integrity issues or crashes when processing untrusted data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-12933?
CVE-2017-12933 is a critical memory corruption vulnerability in Php Php, published on 18 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-125
Which versions are affected by CVE-2017-12933?
It affects 1 product.
Linux distribution packages (3)
php5 SUSE:Linux Enterprise Module for Web and Scripting 12 | All versions | 5.5.14-109.8.2 |
php5 SUSE:Linux Enterprise Software Development Kit 12 SP2 | All versions | 5.5.14-109.8.2 |
php5 SUSE:Linux Enterprise Software Development Kit 12 SP3 | All versions | 5.5.14-109.8.2 |
Products include Php Php.
How do I fix CVE-2017-12933?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-12933 being exploited?
There is no known exploitation of CVE-2017-12933 in the wild and no public exploit code.
Other vulnerabilities in Php Php
Sources
Also known as CVE-2017-1000202, DLA-1076-1, GHSA-rfjj-ch7h-pvv6, SUSE-SU-2017:2518-1, UBUNTU-CVE-2017-12933.