CVE-2018-16421 Information

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.

CVSS Vector

CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://access.redhat.com/errata/RHSA-2019:2154 https://github.com/OpenSC/OpenSC/commit/360e95d45ac4123255a4c796db96337f332160addiff-848b13147a344ba2c6361d91ca77feb1 https://github.com/OpenSC/OpenSC/releases/tag/0.19.0-rc1 https://lists.debian.org/debian-lts-announce/2019/09/msg00009.html https://www.x41-dsec.de/lab/advisories/x41-2018-002-OpenSC/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

6.6