Bug 6067 - [Anolis OS 8] Bugfix for CVE-2023-1255
Summary: [Anolis OS 8] Bugfix for CVE-2023-1255
Status: NEW
Alias: None
Product: Anolis OS 8
Classification: Anolis OS
Component: BaseOS Packages (show other bugs) BaseOS Packages
Version: 8.6
Hardware: All Linux
: P4-Low S4-trivial
Target Milestone: ---
Assignee: Jacob
QA Contact: shuming
URL:
Whiteboard:
Keywords: CVE
Depends on:
Blocks:
 
Reported: 2023-08-01 16:50 UTC by 小龙
Modified: 2023-08-01 16:50 UTC (History)
0 users

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Description 小龙 admin 2023-08-01 16:50:49 UTC 
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.

Broken commit info:

Bugfix commit info:
https://git.openssl.org/?p=openssl.git;a=commit;h=02ac9c9420275868472f33b01def01218742b8bb%20(3.0.x)
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=02ac9c9420275868472f33b01def01218742b8bb
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bc2f61ad70971869b242fc1cb445b98bad50074a