CVE-2023-1255

A vulnerability was found in OpenSSL. This security flaw occurs because the AES-XTS cipher decryption implementation for the 64-bit ARM platform contains an issue that could cause it to read past the input buffer, leading to a crash.

Applications that use the AES-XTS algorithm on the 64-bit ARM platform can crash in rare circumstances. The AES-XTS algorithm is usually for disk encryption.

The AES-XTS cipher decryption implementation for 64 bit ARM platform will read past the end of the ciphertext buffer if the ciphertext size is 4 mod 5, for example, 144 bytes or 1024 bytes. If the memory after the ciphertext buffer is unmapped, this will trigger a crash, resulting in a denial of service.

The application is affected if an attacker can control the size and location of the ciphertext buffer being decrypted by an application using AES-XTS on 64-bit ARM. This is fairly unlikely, making this issue a Low severity one.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.