CVE-2022-23002
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedWhen 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA vulnerability in point compression/decompression for NIST P-256 elliptic curve produces invalid output when the X coordinate is zero. The result is not reduced modulo the P-256 field prime, causing errors in subsequent cryptographic operations and leading to a limited denial of service.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 1CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Sweet B library usageLocate and confirm the presence of the Western Digital Sweet B cryptographic library in your environment by searching for files named 'sweetb', 'sweet_b', or related binaries/librariesAffected if The Sweet B library is present in the system
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Determine installed versionCheck the version of the Sweet B library - according to the CVE, version 1 is affected. Use commands like 'dpkg -l', 'rpm -qi', or inspect library metadata files to confirm the version numberAffected if The installed version is exactly 1.0
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Verify P-256 elliptic curve usageReview application code, configuration files, or runtime logs to determine if NIST P-256 elliptic curve operations are being performed. Look for mentions of 'P-256', 'secp256r1', or 'prime256v1' in cryptographic contextsAffected if P-256 elliptic curve operations are in use
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Check for point compression/decompressionInspect code or configuration that handles elliptic curve point encoding/decoding. Look for functions or modules that perform point compression or decompression on P-256 keysAffected if Point compression or decompression on P-256 is implemented or enabled
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Monitor for cryptographic errorsReview application and system logs for errors related to invalid elliptic curve point operations, field arithmetic failures, or unexpected cryptographic exceptions that may indicate exploitation of this flawAffected if Errors related to P-256 point handling or field arithmetic failures appear in logs
A user is affected if they have Western Digital Sweet B version 1 in use with active P-256 elliptic curve point compression/decompression operations that could involve zero X coordinates.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpdate the cryptographic library to a version that correctly reduces output modulo the P-256 field prime during point compression/decompression for zero X coordinates.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-23002 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-23002 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data