Security readout for executives and security teams
Plain-English summary
CVE-2024-8443 affects OpenSC smart-card tooling. A malicious USB device or smart card could trigger a memory corruption bug while a user enrolls a card with pkcs15-init. The scenario is narrow because it needs physical access, user interaction, and a specific enrollment workflow, but successful exploitation could potentially run code.
Executive priority
Treat this as a targeted workstation and enrollment-system risk, not a broad internet-facing emergency. Prioritize organizations that issue smart cards, manage OpenPGP tokens, or handle untrusted hardware. Patch through vendor channels once fixes are available.
Technical view
The issue is a heap-based buffer overflow in the libopensc OpenPGP driver during key generation/enrollment. Malicious APDU responses from a crafted device or card can cause out-of-bounds memory behavior. Red Hat lists opensc as affected on RHEL 7, 8, 9, and 10. CVSS 3.1 is 2.9: physical, high complexity, user interaction required.
Likely exposure
Exposure is most likely on Linux systems with OpenSC installed and used for OpenPGP smart-card enrollment, especially where pkcs15-init is used with untrusted or newly issued devices. General servers without smart-card enrollment workflows are less likely to be exposed.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Abuse requires a malicious physical USB device or smart card and a user performing enrollment. The potential impact is serious locally, but operational likelihood appears limited by physical access and workflow requirements.
Researcher notes
Evidence supports memory corruption and possible arbitrary code execution, but exploitability is constrained by physical access, high complexity, and user interaction. The source bundle does not provide exploit details, proof of active exploitation, or complete fixed-version mapping across all distributions.
Mitigation direction
- Check Red Hat and Debian guidance for fixed OpenSC packages.
- Update opensc/libopensc through supported distribution channels when available.
- Restrict pkcs15-init enrollment to trusted smart cards and USB readers.
- Avoid enrolling unknown, found, or externally supplied smart-card devices.
- Prioritize endpoints and admin workstations that perform card issuance or enrollment.
Validation and detection
- Inventory systems with opensc or libopensc installed.
- Identify hosts where pkcs15-init or OpenPGP smart-card enrollment is used.
- Confirm affected RHEL 7, 8, 9, and 10 systems against vendor advisories.
- Review device-handling procedures for untrusted smart cards or USB readers.
- Track Red Hat Bugzilla and Debian LTS advisory status for remediation details.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CWE-122: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2024-8443 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Low
- CVSS
- 2.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N0.42.5redhatVulnerability scoring details
Base CVSS 3.1 score
2.9LowVector: CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- Source timelineredhat
Made public.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Source timelineredhat
Reported to Red Hat.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://access.redhat.com/security/cve/CVE-2024-8443CVE reference, redhat · vdb-entry, x_refsource_REDHAT
- RHBZ#2310494CVE reference, redhat · issue-tracking, x_refsource_REDHAT
- https://lists.debian.org/debian-lts-announce/2024/12/msg00026.htmlCVE reference, CVE
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Heap-based Buffer Overflow
Heap-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.