CVE-2018-16418

opensc: Buffer overflow handling string concatention in tools/util.c:util_acl_to_str()

Severity Score

6.6

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Un desbordamiento de búfer al manejar la concatenación de cadenas en util_acl_to_str en tools/util.c en OpenSC en versiones anteriores a la 0.19.0-rc1 podría ser empleado por atacantes para proporcionar smartcards manipuladas para provocar una denegación de servicio (cierre inesperado de la aplicación) o, posiblemente, otro tipo de impacto sin especificar.

The OpenSC set of libraries and utilities provides support for working with smart cards. OpenSC focuses on cards that support cryptographic operations and enables their use for authentication, mail encryption, or digital signatures. Issues addressed include a buffer overflow vulnerability.

*Credits: N/A

CVSS Scores

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-09-03 CVE Reserved
2018-09-04 CVE Published
2024-08-05 CVE Updated
2024-08-05 First Exploit
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

References (7)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2019/09/msg00009.html	Mailing List

URL	Date	SRC
https://www.x41-dsec.de/lab/advisories/x41-2018-002-OpenSC	2024-08-05

URL	Date	SRC
https://github.com/OpenSC/OpenSC/commit/360e95d45ac4123255a4c796db96337f332160ad#diff-628c8445c4e7ae92bbc4be08ba11a4c3	2019-08-06
https://github.com/OpenSC/OpenSC/releases/tag/0.19.0-rc1	2019-08-06

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2019:2154	2019-08-06
https://access.redhat.com/security/cve/CVE-2018-16418	2019-08-06
https://bugzilla.redhat.com/show_bug.cgi?id=1628010	2019-08-06

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Opensc Project Search vendor "Opensc Project"		Opensc Search vendor "Opensc Project" for product "Opensc"				<= 0.18.0 Search vendor "Opensc Project" for product "Opensc" and version " <= 0.18.0"		-		Affected