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, 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. https://www.openssl.org/news/secadv/20230419.txt https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bc2f61ad70971869b242fc1cb445b98bad50074a https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=02ac9c9420275868472f33b01def01218742b8bb
https://www.openssl.org/news/secadv/20230420.txt
Created mingw-openssl tracking bugs for this issue: Affects: fedora-36 [bug 2188528] Affects: fedora-37 [bug 2188530] Created openssl tracking bugs for this issue: Affects: fedora-36 [bug 2188529] Affects: fedora-37 [bug 2188531] Created openssl3 tracking bugs for this issue: Affects: epel-8 [bug 2188526]
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2023:3722 https://access.redhat.com/errata/RHSA-2023:3722
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2023-1255