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This applies commit 02ac9c94 to fix this OpenSSL Security Advisory
issued on 20th April 2023[1]:
Input buffer over-read in AES-XTS implementation on 64 bit ARM
(CVE-2023-1255)
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Severity: Low
Issue summary: The AES-XTS cipher decryption implementation for 64 bit
ARM platform contains a bug that could cause it to read past the input
buffer, leading to a crash.
Impact summary: Applications that use the AES-XTS algorithm on the 64
bit ARM platform can crash in rare circumstances. The AES-XTS algorithm
is usually used 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 in 16 byte blocks, e.g. 144 bytes or 1024 bytes. If the
memory after the ciphertext buffer is unmapped, this will trigger a
crash which results in a denial of service.
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,
the application is affected. This is fairly unlikely making this issue a
Low severity one.
1. https://www.openssl.org/news/secadv/20230420.txt
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
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