Lua up to 5.4.0 Protection Mechanism luaO_pushvfstring memory corruption

Summaryinfo

A vulnerability was found in Lua up to 5.4.0. It has been declared as critical. The impacted element is the function luaO_pushvfstring of the component Protection Mechanism. Such manipulation leads to memory corruption. This vulnerability is traded as CVE-2020-24342. An attack has to be approached locally. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Lua up to 5.4.0. Affected by this issue is the function luaO_pushvfstring of the component Protection Mechanism. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Lua through 5.4.0 allows a stack redzone cross in luaO_pushvfstring because a protection mechanism wrongly calls luaD_callnoyield twice in a row.

The weakness was shared 08/13/2020. This vulnerability is handled as CVE-2020-24342 since 08/13/2020. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• Lua

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4.0

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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