CVE-2023-21506 Memory corruption in Samsung Blockchain Keystore

Medium 6.7 Published 4 May 2023 Updated 12 Feb 2025

A local attacker can execute arbitrary code via an out-of-bounds write in the Samsung Blockchain Keystore trustlet.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-21506?

CVE-2023-21506 is a medium-severity memory corruption vulnerability in Samsung Blockchain Keystore, published on 4 May 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Out-of-bounds Write vulnerability while processing BC_TUI_CMD_SEND_RESOURCE_DATA_ARRAY command in bc_tui trustlet from Samsung Blockchain Keystore prior to version 1.3.12.1 allows local attacker to execute arbitrary code.

Weakness: CWE-787

Which versions are affected by CVE-2023-21506?

It affects 1 product.

Products include Samsung Samsung Blockchain Keystore.

How do I fix CVE-2023-21506?

No fix has been published for CVE-2023-21506 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-21506 being exploited?

There is no known exploitation of CVE-2023-21506 in the wild and no public exploit code.

Sources

Also known as GHSA-7q9c-c73r-h952.