CVE-2012-4436
Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when...
Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.
Exploit likelihood
What each source reports
NVD Score used
Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.
- Record
CVE-2012-4436- CVSS 2.0
- 4.4 Medium
AV:L/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-119
- Updated
- 2026-11-02
CVE List No score
Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.
- Record
CVE-2012-4436- Updated
- 2026-11-02
EUVDEUVD-2012-4370 No score
Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.
- Record
EUVD-2012-4370- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f5j9-5h8m-c8mw No score
Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when...
Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.
- Record
GHSA-f5j9-5h8m-c8mw- Weakness
- CWE-119
- Updated
- 2026-11-02
OSV No score
Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.
- Record
CVE-2012-4436- Updated
- 2026-11-02
OSVDEBIAN-CVE-2012-4436 No score
Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.
- Record
DEBIAN-CVE-2012-4436- Updated
- 2026-11-02
OSVUBUNTU-CVE-2012-4436 No score
Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.
- Record
UBUNTU-CVE-2012-4436- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2012-4436 is a medium vulnerability (CVSS 4.4) in Cipherdyne Fwknop, published October 22, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.66%, the 51st percentile. Fixed in fwknop 2.0.3-1.
References
openwall.com/lists/oss-security/2012/09/19/2
cipherdyne.org/blog/2012/09/software-release-fwknop-2.0.3.html
nvd.nist.gov/vuln/detail/CVE-2012-4436