PT-2018-13557 · Opensc+4 · Opensc+4

Eric Sesterhenn · Published 2018-09-04 · Updated 2024-06-15 · CVE-2018-16421

Positive Technologies (AI Summary)

CVSS v3.1

6.6

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions OpenSC versions prior to 0.19.0-rc1

Description The issue is related to several buffer overflows that occur when handling responses from a CAC Card in the cac get serial nr from CUID function in libopensc/card-cac.c. This could be exploited by attackers who can supply crafted smartcards, potentially leading to a denial of service (application crash) or other unspecified impacts.

Recommendations For versions prior to 0.19.0-rc1, update to version 0.19.0-rc1 or later to resolve the issue. As a temporary workaround, consider restricting the use of crafted smartcards to minimize the risk of exploitation.

Exploit

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALT-PU-2018-2326

CESA-2019_2154

CVE-2018-16421

DLA-1916-1

MGASA-2019-0019

OPENSUSE-SU-2018_3716-1

OPENSUSE-SU-2024:11123-1

RHSA-2019:2154

RHSA-2019_2154

SUSE-SU-2018:3629-1

Affected Products

Alt Linux

Centos

Opensc

Red Hat

Suse

References · 57

• 🔥 https://x41-dsec.de/lab/advisories/x41-2018-002-OpenSC · Exploit
• https://github.com/OpenSC/OpenSC/releases/tag/0.19.0-rc1 · Patch
• https://github.com/OpenSC/OpenSC/commit/360e95d45ac4123255a4c796db96337f332160ad#diff-848b13147a344ba2c6361d91ca77feb1 · Patch
• https://osv.dev/vulnerability/CVE-2018-16421 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2019:2154 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2019-0019.html · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2018:3629-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/FELOINZJEHXTJ757WSU4HYL5HWENARJH · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-16421 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-16421 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2019-0019 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-16421 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2024:11123-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-16421 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-1916-1 · Vendor Advisory