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Vulnerability · Published Nov 6, 2023 · Assigned by redhat

CVE-2023-4535Opensc: out-of-bounds read in myeid driver handling encryption using symmetric keys

Medium 4.5

In plain English

A medium-severity out-of-bounds read in Red Hat Enterprise Linux 7 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.5Medium
Exploit odds (30 days)0.5%top 55.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

An out-of-bounds read vulnerability was found in OpenSC packages within the MyEID driver when handling symmetric key encryption. Exploiting this flaw requires an attacker to have physical access to the computer and a specially crafted USB device or smart card. This flaw allows the attacker to manipulate APDU responses and potentially gain unauthorized access to sensitive data, compromising the system's security.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:9opensc0.23.0-3.el9_3ALSA-2023:7879
Alpine:v3.20opensc0.24.0-r0ALPINE-CVE-2023-4535
Alpine:v3.21opensc0.24.0-r0ALPINE-CVE-2023-4535
Alpine:v3.22opensc0.24.0-r0ALPINE-CVE-2023-4535
Alpine:v3.23opensc0.24.0-r0ALPINE-CVE-2023-4535
Alpine:v3.24opensc0.24.0-r0ALPINE-CVE-2023-4535
Debian:12opensc0.23.0-0.3+deb12u1DEBIAN-CVE-2023-4535
Debian:13opensc0.23.0-2DEBIAN-CVE-2023-4535
Debian:14opensc0.23.0-2DEBIAN-CVE-2023-4535

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references

Weakness: CWE-125 · Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L

References