PatchTheCVECVE-2007-3528: The blowfish mode in DAR before 2.3.4 uses weak Blowfish-CBC cryptography by (1) discarding random bits by the
CVE-2007-3528 is a medium-severity flaw (CVSS 5.0) affecting dar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.0 (Medium) |
| EPSS exploit chance | 1.8% (top 22%) |
| CISA exploited list | No |
| Published | 2007-07-03 |
| Last modified | 2026-06-16 |
Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2007-3528?
dar: upgrade to newer than 2.3.3. Exact commands for each OS are on this page.
Is CVE-2007-3528 being exploited?
CVE-2007-3528 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2007-3528 affect?
CVE-2007-3528 affects dar. Severity is medium (CVSS 5.0). 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 pa
How urgent is CVE-2007-3528?
Priority 37/100. No elevated risk signals yet.