OpenSC up to 0.21.x gemsafe GPK Smart Card Software Driver sc_pkcs15emu_gemsafeGPK_init stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenSC up to 0.21.x. It has been classified as critical. Affected is the function sc_pkcs15emu_gemsafeGPK_init of the component gemsafe GPK Smart Card Software Driver. The manipulation leads to stack-based overflow. This vulnerability is listed as CVE-2020-26571. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in OpenSC up to 0.21.x and classified as critical. This issue affects the function sc_pkcs15emu_gemsafeGPK_init of the component gemsafe GPK Smart Card Software Driver. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability.

The weakness was presented 10/06/2020. The advisory is shared at bugs.chromium.org. The identification of this vulnerability is CVE-2020-26571. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 239948 (TencentOS Server 3: opensc (TSSA-2022:0089)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.21.0-rc1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (239948). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 239948
Nessus Name: TencentOS Server 3: opensc (TSSA-2022:0089)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OpenSC 0.21.0-rc1

Timelineinfo

10/06/2020 🔍
10/06/2020 +0 days 🔍
10/06/2020 +0 days 🔍
06/17/2025 +1715 days 🔍

Sourcesinfo

Advisory: bugs.chromium.org
Status: Confirmed

CVE: CVE-2020-26571 (🔍)
GCVE (CVE): GCVE-0-2020-26571
GCVE (VulDB): GCVE-100-162293

Entryinfo

Created: 10/06/2020 10:30
Updated: 06/17/2025 22:45
Changes: 10/06/2020 10:30 (17), 10/06/2020 10:33 (21), 11/15/2020 10:20 (2), 11/16/2020 17:17 (2), 11/16/2020 17:24 (14), 06/17/2025 22:45 (19)
Complete: 🔍
Cache ID: 216::103

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

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