CVE-2018-16421
6.6
MEDIUM
CVSS 3.1
EPSS 0.18%
Description
Several buffer overflows when handling responses from a CAC Card in cac_get_serial_nr_from_CUID in libopensc/card-cac.c in OpenSC before 0.19.0-rc1 could be used by attackers able to supply crafted smartcards to cause a denial of service (application crash) or possibly have unspecified other impact.
How to fix CVE-2018-16421
To remediate CVE-2018-16421, upgrade the affected package to a fixed version below.
- Debian/opensc—upgrade to 0.19.0~rc1-1 or later
Is CVE-2018-16421 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.19.0~rc1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.6 | CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |