A vulnerability was found in Creolabs Gravity 1.0. It has been rated as critical. Affected by this issue is an unknown function of the file gravity_lexer.c. The manipulation as part of a Variable leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Creolabs Gravity Version: 1.0 Use-After-Free Possible code execution. An example of a Heap-Use-After-Free after the 'sublexer' pointer has been freed. Line 542 of gravity_lexer.c. 'lexer' is being used to access a variable but 'lexer' has already been freed, creating a Heap Use-After-Free condition.

The bug was discovered 04/25/2017. The weakness was disclosed 11/17/2017 (Website). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2017-1000172 since 11/16/2017. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 205 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entry VDB-109593 is pretty similar.

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• Creolabs

Name

• Gravity

Version

• 1.0

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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