CVE-2023-1255

NameCVE-2023-1255
DescriptionIssue 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1034720

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openssl (PTS)buster1.1.1n-0+deb10u3fixed
buster (security)1.1.1n-0+deb10u6fixed
bullseye1.1.1w-0+deb11u1fixed
bullseye (security)1.1.1n-0+deb11u5fixed
bookworm, bookworm (security)3.0.11-1~deb12u2fixed
sid, trixie3.1.5-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opensslsourcebuster(not affected)
opensslsourcebullseye(not affected)
opensslsource(unstable)3.0.9-11034720

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

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