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NVD / CVE Program· CNA redhat

CVE-2024-8443: Libopensc: heap buffer overflow in openpgp driver when generating key

Noroxi assessment

Priority: Monitor (action score 11/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.34% (FIRST EPSS).
  • Physical access to the device is required. No account or password is required. A user must open a link or visit a page. Special conditions such as timing or configuration are required.
  • Fixed version: github.com/OpenSC/OpenSC opensc 0.26.0.

Low priority for now. Upgrade to github.com/OpenSC/OpenSC opensc 0.26.0 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A heap-based buffer overflow vulnerability was found in the libopensc OpenPGP driver. A crafted USB device or smart card with malicious responses to the APDUs during the card enrollment process using the `pkcs15-init` tool may lead to out-of-bound rights, possibly resulting in arbitrary code execution.

LowCVSS 2.9 · v3.1—No exploit Fix available
Published
Sep 10, 2024
Updated
Jun 30, 2026
EPSS
0.3% · 28th percentile

Report tools

JSON

Action score

11

Monitor

Low priority for now.

CVSS
11 / 40 · 2.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
2.9
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-8443

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
opensc projectopensc
redhatenterprise linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • opensc project openscall versions
  • redhat enterprise linux7.0
  • redhat enterprise linux8.0
  • redhat enterprise linux9.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • github.com/OpenSC/OpenSC opensc

    • 0.26.0 and later · before 0.26.0affected · semver

  • Red Hat Red Hat Enterprise Linux 10

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 8

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 9

    • all versionsaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.21openscbefore 0.26.0-r00.26.0-r0
Debian:11openscbefore 0.21.0-1+deb11u10.21.0-1+deb11u1
Debian:12openscbefore 0.23.0-0.3+deb12u20.23.0-0.3+deb12u2
Debian:13openscbefore 0.25.1-2.10.25.1-2.1
openSUSE:Leap 15.6openscbefore 0.22.0-150600.11.3.10.22.0-150600.11.3.1
openSUSE:Leap Micro 5.5openscbefore 0.22.0-150400.3.12.10.22.0-150400.3.12.1
openSUSE:Tumbleweedopenscbefore 0.25.1-2.10.25.1-2.1
SUSE:Linux Enterprise Micro 5.1openscbefore 0.19.0-150100.3.31.10.19.0-150100.3.31.1
SUSE:Linux Enterprise Micro 5.3openscbefore 0.22.0-150400.3.12.10.22.0-150400.3.12.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6openscbefore 0.22.0-150600.11.3.10.22.0-150600.11.3.1
SUSE:Linux Enterprise Server 12 SP5openscbefore 0.13.0-3.31.10.13.0-3.31.1
SUSE:Linux Micro 6.0openscbefore 0.24.0-3.10.24.0-3.1
SUSE:Linux Micro 6.1openscbefore 0.24.0-slfo.1.1_2.10.24.0-slfo.1.1_2.1

Same product

opensc project: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-6502sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a call from eidenv.
    31Monitor
  • CVE-2021-34193Stack overflow vulnerability in OpenSC smart card middleware before 0.23 via crafted responses to APDUs.
    30Monitor
  • CVE-2019-16058An issue was discovered in the pam_p11 component 0.2.0 and 0.3.0 for OpenSC.
    30Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2023-5992Jan 31, 2024 · Opensc: side-channel leaks while stripping encryption pkcs#1 padding
    23Monitor
  • ← EarlierCVE-2024-1454Feb 12, 2024 · Opensc: memory use after free in authentic driver when updating token info
    13Monitor
  • Later →CVE-2025-49010Mar 30, 2026 · OpenSC: Stack-buffer-overflow WRITE in GET RESPONSE
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
github.com/OpenSC/OpenSC opensc0.26.0Vendor (CNA)
alpine:opensc0.26.0-r0 · Alpine:v3.21Package registry (OSV)
debian:opensc0.23.0-0.3+deb12u2 · Debian:12Package registry (OSV)
opensuse:opensc0.22.0-150600.11.3.1 · openSUSE:Leap 15.6Package registry (OSV)
suse:opensc0.13.0-3.31.1 · SUSE:Linux Enterprise Server 12 SP5Package registry (OSV)
suse:opensc0.22.0-150600.11.3.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Physical access to the device is required.
  • No account or password is required.
  • A user must open a link or visit a page.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Physical
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-122 · Heap-based Buffer Overflow

CVSS vector

CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records