OpenSC ASN.1 pkcs15-cardos.c cardos_have_verifyrc_package buffer overflow

HistoryDiffrelatejsonxmlCTI

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.
6.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in OpenSC. It has been rated as critical. The impacted element is the function cardos_have_verifyrc_package of the file pkcs15-cardos.c of the component ASN.1 Handler. The manipulation leads to buffer overflow. This vulnerability is uniquely identified as CVE-2023-2977. No exploit exists. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in OpenSC (version unknown). It has been rated as critical. This issue affects the function cardos_have_verifyrc_package of the file pkcs15-cardos.c of the component ASN.1 Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 05/30/2023 as 2785. The advisory is shared at github.com. The identification of this vulnerability is CVE-2023-2977 since 05/30/2023. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 213413 (Debian dla-4004 : opensc - security update), which helps to determine the existence of the flaw in a target environment.

Applying the patch 3bf3ab2f9091f984cda6dd910654ccbbe3f06a40 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the databases at Tenable (213413) and EUVD (EUVD-2023-34418). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

OpenSC

License

open-source

Website

Product: https://github.com/OpenSC/OpenSC/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔍

CNA Base Score: 7.1
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 213413
Nessus Name: Debian dla-4004 : opensc - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 3bf3ab2f9091f984cda6dd910654ccbbe3f06a40

Timelineinfo

05/30/2023 🔍
05/30/2023 +0 days 🔍
05/30/2023 +0 days 🔍
12/19/2025 +934 days 🔍

Sourcesinfo

Product: github.com

Advisory: 2785
Status: Confirmed

CVE: CVE-2023-2977 (🔍)
GCVE (CVE): GCVE-0-2023-2977
GCVE (VulDB): GCVE-100-230237
EUVD: 🔍

Entryinfo

Created: 05/30/2023 18:35
Updated: 12/19/2025 21:48
Changes: 05/30/2023 18:35 (41), 06/24/2023 12:51 (1), 06/24/2023 12:59 (11), 12/28/2024 21:46 (17), 01/09/2025 21:43 (11), 12/19/2025 21:48 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.