PatchTheCVECVE-2017-8305: The UDFclient (before 0.8.8) custom strlcpy implementation has a buffer overflow
CVE-2017-8305 is a critical-severity flaw (CVSS 9.8) affecting udfclient. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The UDFclient (before 0.8.8) custom strlcpy implementation has a buffer overflow. UDFclient's strlcpy is used only on systems with a C library (e.g., glibc) that lacks its own strlcpy.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.4% (top 28%) |
| CISA exploited list | No |
| Weakness | CWE-119 |
| Published | 2017-04-27 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · 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-2017-8305?
udfclient: upgrade to newer than 0.8.7. Exact commands for each OS are on this page.
Is CVE-2017-8305 being exploited?
CVE-2017-8305 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-2017-8305 affect?
CVE-2017-8305 affects udfclient. Severity is critical (CVSS 9.8). The UDFclient (before 0.8.8) custom strlcpy implementation has a buffer overflow. UDFclient's strlcpy is used only on systems with a C library (e.g., glibc) that lacks its own strlcpy.
How urgent is CVE-2017-8305?
Priority 57/100. Critical severity; Remotely exploitable, no login, no user action