OpenSC up to 0.18.x Response Smartcard out-of-bounds

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability was found in OpenSC up to 0.18.x. It has been rated as problematic. This issue affects an unknown functionality of the component Response Handler. The manipulation as part of a Smartcard leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The bug was discovered 08/11/2018. The weakness was released 09/04/2018 (Website). It is possible to read the advisory at The identification of this vulnerability is CVE-2018-16427 since 09/03/2018. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 23 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 118880 (openSUSE Security Update : opensc (openSUSE-2018-1384)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171704 (SUSE Enterprise Linux Security Update for opensc (SUSE-SU-2018:3622-1)).

Upgrading to version 0.19.0-rc1 eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (118880). Entries connected to this vulnerability are available at 123526, 123527, 123528 and 123542.





CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.1
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍



VulDB Base Score: 🔍
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VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Out-of-bounds
CWE: CWE-125 / CWE-119
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 118880
Nessus Name: openSUSE Security Update : opensc (openSUSE-2018-1384)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: OpenSC 0.19.0-rc1


08/11/2018 🔍
09/03/2018 +22 days 🔍
09/03/2018 +0 days 🔍
09/04/2018 +1 days 🔍
09/04/2018 +0 days 🔍
11/09/2018 +66 days 🔍
11/10/2018 +1 days 🔍
05/06/2023 +1638 days 🔍


Advisory: RHSA-2019:2154
Status: Confirmed

CVE: CVE-2018-16427 (🔍)
See also: 🔍


Created: 09/04/2018 03:46 PM
Updated: 05/06/2023 07:33 PM
Changes: 09/04/2018 03:46 PM (74), 03/20/2020 01:18 PM (2), 05/06/2023 07:33 PM (5)
Complete: 🔍


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