CVE-2023-1255

Name	CVE-2023-1255
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1034720

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
openssl (PTS)	buster	1.1.1n-0+deb10u3	fixed
	buster (security)	1.1.1n-0+deb10u6	fixed
	bullseye	1.1.1w-0+deb11u1	fixed
	bullseye (security)	1.1.1n-0+deb11u5	fixed
	bookworm, bookworm (security)	3.0.11-1~deb12u2	fixed
	trixie	3.1.5-1	fixed
	sid	3.2.1-3	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Debian Bugs
openssl	source	buster	(not affected)
openssl	source	bullseye	(not affected)
openssl	source	(unstable)	3.0.9-1	1034720

Notes

[bullseye] - openssl <not-affected> (Vulnerable code not present)
[buster] - openssl <not-affected> (Vulnerable code not present)
https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=02ac9c9420275868472f33b01def01218742b8bb
https://www.openssl.org/news/secadv/20230420.txt