Out-of-bounds Read in Opensc Project
CVE-2023-4535
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.5 (Medium). Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (41.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.001
Affected products
- Opensc Project — versions 0.23.0
- Fedoraproject Fedora — versions 38, 39
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9 — versions 0:0.23.0-3.el9_3
- Red Hat Enterprise Linux — versions 9.0
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2023:7879 (vendor-advisory, Third Party Advisory)
- access.redhat.com/security/cve/CVE-2023-4535 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking)
- github.com/OpenSC/OpenSC/commit/f1993dc4e0b33050b8f72a3558ee88b24c4063b2 (Patch)
- github.com/OpenSC/OpenSC/issues/2792 (Patch, Issue Tracking)
- github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1 (Release Notes)
- github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories (Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-4535?
- CVE-2023-4535 is a medium-severity vulnerability in Opensc Project, classified under Out-of-bounds Read. CVSS score: 4.5/10. Published 2023-11-06.
- How severe is CVE-2023-4535?
- Medium severity. CVSS v3 base score is 4.5 out of 10.