#VU86937 Cryptographic issues in OpenSC - CVE-2023-5992

Vulnerability identifier: #VU86937

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-5992

CWE-ID: CWE-310

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenSC
Universal components / Libraries / Libraries used by multiple products

Vendor: OpenSC

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to the PKCS#1 encryption padding removal is not implemented as side-channel resistant. A remote attacker can gain access to sensitive data.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenSC: 0.2.0 - 0.24.0

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External links
https://access.redhat.com/security/cve/CVE-2023-5992
https://bugzilla.redhat.com/show_bug.cgi?id=2248685
https://github.com/OpenSC/OpenSC/wiki/CVE-2023-5992
https://access.redhat.com/errata/RHSA-2024:0966
https://access.redhat.com/errata/RHSA-2024:0967

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.