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

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5.3$0-$5k0.00

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 memory corruption vulnerability. Using CWE to declare the problem leads to CWE-121. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The gemsafe GPK smart card software driver in OpenSC before 0.21.0-rc1 has a stack-based buffer overflow in sc_pkcs15emu_gemsafeGPK_init.

The weakness was presented 10/06/2020. The advisory is shared at bugs.chromium.org. The identification of this vulnerability is CVE-2020-26571 since 10/06/2020. Access to the local network is required for this attack. The requirement for exploitation is a simple authentication. Technical details are known, but no exploit is available.

Upgrading to version 0.21.0-rc1 eliminates this vulnerability.

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VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

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

NVD Base Score: 5.5
NVD Vector: 🔒

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VulDB Base Score: 🔒
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VulDB Reliability: 🔍

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Exploitinginfoedit

Class: Memory corruption
CWE: CWE-121
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenSC 0.21.0-rc1

Timelineinfoedit

10/06/2020 CVE assigned
10/06/2020 +0 days VulDB entry created
10/06/2020 +0 days Advisory disclosed
11/16/2020 +41 days VulDB last update

Sourcesinfoedit

Advisory: bugs.chromium.org
Status: Confirmed

CVE: CVE-2020-26571 (🔒)

Entryinfoedit

Created: 10/06/2020 10:30 AM
Updated: 11/16/2020 05:24 PM
Changes: (14) vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai
Complete: 🔍

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