CVE-2022-23004: Algorithm incorrectly returning error and Invalid unreduced value written to output buffer
First published: Fri Jul 29 2022(Updated: )
When computing a shared secret or point multiplication on the NIST P-256 curve using a public key with an X coordinate of zero, an error is returned from the library, and an invalid unreduced value is written to the output buffer. This may be leveraged by an attacker to cause an error scenario, resulting in a limited denial of service for an individual user. The scope of impact cannot extend to other components.
Credit: psirt@wdc.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Westerndigital Sweet B | =1 |
Remedy
The vulnerability was addressed by improving the point-scalar multiplication algorithm to account for anomalous input and by ensuring that errors are returned from library routines before any output buffer is written. To get the latest version of the Sweet B library, update your local repository from https://github.com/westerndigitalcorporation/sweet-b
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID is CVE-2022-23004.
What is the severity of CVE-2022-23004?
The severity of CVE-2022-23004 is medium with a CVSS score of 5.3.
What is the affected software by CVE-2022-23004?
The affected software is Western Digital Sweet B version 1.
How can an attacker exploit CVE-2022-23004?
An attacker can exploit CVE-2022-23004 by leveraging the error scenario caused when computing a shared secret or point multiplication on the NIST P-256 curve with a public key X coordinate of zero.
Is there a fix available for CVE-2022-23004?
Yes, Western Digital has provided a fix for CVE-2022-23004. Please refer to the reference link for more information.
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