VDB-276789 · CVE-2024-8443 · EUVD-2024-49628

libopensc OpenPGP Driver heap-based overflow

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.
3.8	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in libopensc. The impacted element is an unknown function of the component OpenPGP Driver. Performing a manipulation results in heap-based overflow. This vulnerability is cataloged as CVE-2024-8443. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in libopensc (affected version not known). This affects some unknown functionality of the component OpenPGP Driver. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A heap-based buffer overflow vulnerability was found in the libopensc OpenPGP driver. A crafted USB device or smart card with malicious responses to the APDUs during the card enrollment process using the `pkcs15-init` tool may lead to out-of-bound rights, possibly resulting in arbitrary code execution.

The advisory is shared at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2024-8443 since 09/04/2024. The exploitability is told to be easy. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/05/2025).

The vulnerability scanner Nessus provides a plugin with the ID 207782 (SUSE SLED15 / SLES15 / openSUSE 15 Security Update : opensc (SUSE-SU-2024:3444-1)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (207782) and EUVD (EUVD-2024-49628). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

libopensc

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.8
VulDB Meta Temp Score: 3.8

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

NVD Base Score: 2.9
NVD Vector: 🔍

CNA Base Score: 2.9
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Partially
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: 207782
Nessus Name: SUSE SLED15 / SLES15 / openSUSE 15 Security Update : opensc (SUSE-SU-2024:3444-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/04/2024 🔍
09/07/2024 +3 days 🔍
09/07/2024 +0 days 🔍
07/05/2025 +301 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2024-8443 (🔍)
GCVE (CVE): GCVE-0-2024-8443
GCVE (VulDB): GCVE-100-276789
EUVD: 🔍

Entryinfo

Created: 09/07/2024 08:08
Updated: 07/05/2025 13:14
Changes: 09/07/2024 08:08 (49), 09/11/2024 14:13 (13), 09/27/2024 00:39 (11), 09/28/2024 03:32 (2), 10/01/2024 16:33 (4), 07/05/2025 13:14 (1)
Complete: 🔍
Cache ID: 216::103

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