CVE-2023-21511 Information disclosure in Samsung Blockchain Keystore

Medium 4.4 Published 4 May 2023 Updated 12 Feb 2025

A local attacker can read arbitrary memory via an out-of-bounds read 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-2023-21511?

CVE-2023-21511 is a medium-severity 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 Read vulnerability while processing CMD_COLDWALLET_BTC_SET_PRV_UTXO in bc_core trustlet from Samsung Blockchain Keystore prior to version 1.3.12.1 allows local attacker to read arbitrary memory.

Weakness: CWE-125

Which versions are affected by CVE-2023-21511?

It affects 1 product.

Products include Samsung Samsung Blockchain Keystore.

How do I fix CVE-2023-21511?

No fix has been published for CVE-2023-21511 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-21511 being exploited?

There is no known exploitation of CVE-2023-21511 in the wild and no public exploit code.

Sources

Also known as GHSA-j8ch-x6v3-mfhm.