TI-2018-11772 Aliases CVE-2018-16423 GHSA-x56f-5g95-vmfx

A double free when handling responses from a smartcard in sc_file_set_sec_attr in…

LOW 30CWE-415Published 2018-09-04 · Updated 2024-08-05

Key facts

Attack vector: Physical
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-415 and the CVSS impact.

Summary

A double free when handling responses from a smartcard in sc_file_set_sec_attr in libopensc/sc.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.

Why it matters now

EPSS 0.00635 50th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:opensc_project:opensc::::::::	up to 0.18.0	Vulnerable	OpenSC

cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:* Versions up to 0.18.0 Vulnerable ·OpenSC

Remediation

Red Hat 1 advisory

RHSA-2019:2154 Released 2019-08-06 · Red Hat rating Moderate
opensc security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) opensc-0.19.0-3.el7
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) opensc-0.19.0-3.el7
- Red Hat Enterprise Linux Server (v. 7) opensc-0.19.0-3.el7, opensc-0.19.0-3.el7.ppc
- Red Hat Enterprise Linux Workstation (v. 7) opensc-0.19.0-3.el7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux Client (v. 7)	Fixed	RHSA-2019:2154
Red Hat Enterprise Linux ComputeNode Optional (v. 7)	Fixed	RHSA-2019:2154
Red Hat Enterprise Linux Server (v. 7)	Fixed	RHSA-2019:2154
Red Hat Enterprise Linux Workstation (v. 7)	Fixed	RHSA-2019:2154

Not affected: 1 product

Red Hat Enterprise Linux 8

Timeline

2026-10-02 Threatist record created from CVE-2018-16423
2026-10-03 Alias added: GHSA-x56f-5g95-vmfx
2026-10-08 EPSS moved to the 50th–90th percentile

References

Exploit 1

https://www.x41-dsec.de/lab/advisories/x41-2018-002-OpenSC/

Patch 2

Advisory 1

RHSA-2019:2154

Other 1

[debian-lts-announce] 20190911 [SECURITY] [DLA 1916-1] opensc security update

TI-2025-40564 OpenSC: `sc_compacttlv_find_tag` can return out-of-bounds pointers CVSS 3.1MEDIUM 6.8
TI-2025-40563 OpenSC: Out of Bounds vulnerability CVSS 3.1MEDIUM 6.8
TI-2019-04558 sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a call from eidenv. CVSS 3.0HIGH 7.5
TI-2021-13306 Stack overflow vulnerability in OpenSC smart card middleware before 0.23 via crafted responses to APDUs. CVSS 3.1HIGH 7.5
TI-2019-12067 An issue was discovered in the pam_p11 component 0.2.0 and 0.3.0 for OpenSC. CVSS 3.0HIGH 7.5
TI-2023-21453 Opensc: potential pin bypass when card tracks its own login state CVSS 3.1MEDIUM 6.6

See all 49 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences