CVE-2022-23002 Point Compression/Decompression of NIST P-256 points with X coordinate of zero
An attacker can cause a limited denial of service for individual users by triggering an error in applications using the Sweet B Library with specific elliptic curve points.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-23002?
CVE-2022-23002 is a medium-severity denial of service vulnerability in Western Digital Sweet B Library, published on 29 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
When compressing or decompressing a point on the NIST P-256 elliptic curve with an X coordinate of zero, the resulting output is not properly reduced modulo the P-256 field prime and is invalid. The resulting output will cause an error when used in other operations. This may be leveraged by an attacker to cause an error scenario in applications which use the library, resulting in a limited denial of service for an individual user. The scope of impact cannot extend to other components.
Weakness: CWE-703
Which versions are affected by CVE-2022-23002?
It affects 1 product.
Products include Westerndigital Sweet B.
How do I fix CVE-2022-23002?
No fix has been published for CVE-2022-23002 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-23002 being exploited?
There is no known exploitation of CVE-2022-23002 in the wild and no public exploit code.