CVE-2012-4436
Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when...
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.
- Severity
- 4.4 MediumCVSS 2.0, NVD
- Exploit chance
- 0.66%EPSS, 51st percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
2.0.3-1fwknop +2 more
Description
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
Affected products
Affected packages
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 ListNo 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-2012-4370No 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-c8mwNo 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
OSVNo 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-2012-4436No 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-2012-4436No 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
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
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