Input buffer over-read in AES-XTS implementation on 64 bit ARM
Summary
Input buffer over-read in AES-XTS implementation on 64 bit ARM
Original description
The description as published by the source.
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.
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2023-1255 openssl Fixed in: 3.0.8-r4
- Debian DEBIAN-CVE-2023-1255 openssl Fixed in: 3.0.9-1
References
- advisory github.com
- advisory nvd.nist.gov
- advisory security.netapp.com
- advisory openssl.org
- patch git.openssl.org
- patch git.openssl.org