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Fencer Vulns
medium 6.6

CVE-2018-16425 json

A double free when handling responses from an HSM Card in sc_pkcs15emu_sc_hsm_init in libopensc/pkcs15-sc-hsm.c in OpenSC before 0.19.0-rc1…

published 2018-09-04 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-8265

cvss
6.6
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

A double free when handling responses from an HSM Card in sc_pkcs15emu_sc_hsm_init in libopensc/pkcs15-sc-hsm.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.

Patch / fix

  • opensc Debian 14, Debian 13, Debian 12 0.19.0~rc1-1

debian advisories DEBIAN-CVE-2018-16425

  • opensc SLE Module for Basesystem 15 0.18.0-3.8.1

suse advisories SUSE-SU-2018:3629-1

  • opensc openSUSE Tumbleweed 0.21.0-2.2

opensuse advisories openSUSE-SU-2024:11123-1

  • opensc Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 0.19.0-r0

alpine advisories ALPINE-CVE-2018-16425

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-16425 updated cvss 4.3

opensc: Double free handling responses from HSM Cards in pkcs15-sc-hsm.c:sc_pkcs15emu_sc_hsm_init()

  • Red Hat Enterprise Linux 7 opensc Red Hat Enterprise Linux 8 opensc
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.64% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • x41-dsec.de https://www.x41-dsec.de/lab/advisories/x41-2018-002-OpenSC/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.6 CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.