OpenSC up to 0.23.0 PIN improper authentication

Summaryinfo

A vulnerability identified as critical has been detected in OpenSC up to 0.23.0. This issue affects some unknown processing of the component PIN Handler. This manipulation causes improper authentication. The identification of this vulnerability is CVE-2023-40660. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenSC up to 0.23.0. It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component PIN Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A flaw was found in OpenSC packages that allow a potential PIN bypass. When a token/card is authenticated by one process, it can perform cryptographic operations in other processes when an empty zero-length pin is passed. This issue poses a security risk, particularly for OS logon/screen unlock and for small, permanently connected tokens to computers. Additionally, the token can internally track login status. This flaw allows an attacker to gain unauthorized access, carry out malicious actions, or compromise the system without the user's awareness.

The weakness was shared 09/27/2023. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2023-40660 since 08/18/2023. The technical details are unknown and an exploit is not publicly 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.

Upgrading to version 0.24.0-rc1 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (213413). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• OpenSC

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23.0

License

• open-source

Website

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

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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