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TI-2018-11767 Aliases CVE-2018-16418GHSA-4qgx-xw7p-6ggp

A buffer overflow when handling string concatenation in util_acl_to_str in tools/util.c…

Priority LOW 30CWE-119Published · Updated

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-119 and the CVSS impact.

Summary

A buffer overflow when handling string concatenation in util_acl_to_str in tools/util.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 0.00666 52nd 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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:*up to 0.18.0VulnerableOpenSC
  • 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 →

ProductStatusPlan 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

  1. 2026-10-02 Threatist record created from CVE-2018-16418
  2. 2026-10-03 Alias added: GHSA-4qgx-xw7p-6ggp

References

Exploit 1

Patch 2

Advisory 1

Other 1

  • 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