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TI-2014-02993 Aliases CVE-2014-3676GHSA-pg7r-qqvh-q4vw

Heap-based buffer overflow in Shim allows remote attackers to execute arbitrary code via…

Priority MEDIUM 41CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

Heap-based buffer overflow in Shim allows remote attackers to execute arbitrary code via a crafted IPv6 address, related to the "tftp:// DHCPv6 boot option."

Why it matters now

EPSS 0.05232 92nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:redhat:shim:*:*:*:*:*:*:*:*0.3 to before 0.8VulnerableRed Hat
  • cpe:2.3:a:redhat:shim:*:*:*:*:*:*:*:* Versions 0.3 to before 0.8 Vulnerable ·Red Hat

Remediation

Red Hat 1 advisory

  • RHSA-2014:1801 Released 2014-11-04 · Red Hat rating Moderate
    shim security update
    • Red Hat Enterprise Linux Client (v. 7) mokutil-0.7-8.el7_0, shim-0.7-8.el7_0, shim-signed-0.7-8.el7_0 +1
    • Red Hat Enterprise Linux ComputeNode (v. 7) mokutil-0.7-8.el7_0, shim-0.7-8.el7_0, shim-signed-0.7-8.el7_0 +1
    • Red Hat Enterprise Linux Server (v. 7) mokutil-0.7-8.el7_0, shim-0.7-8.el7_0, shim-signed-0.7-8.el7_0 +1
    • Red Hat Enterprise Linux Workstation (v. 7) mokutil-0.7-8.el7_0, shim-0.7-8.el7_0, shim-signed-0.7-8.el7_0 +1

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2014:1801
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2014:1801
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2014:1801
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2014:1801

Timeline

  1. 2026-10-02 Threatist record created from CVE-2014-3676
  2. 2026-10-03 Alias added: GHSA-pg7r-qqvh-q4vw

References

Exploit 1

Advisory 1

  • TI-2023-21352 Shim: rce in http boot support may lead to secure boot bypass CVSS 3.1HIGH 8.3
  • TI-2014-02994 Unspecified vulnerability in Shim might allow attackers to execute arbitrary code via a… CVSS 2.0HIGH 7.5
  • TI-2022-11371 Out-of-bounds write in Red Hat Bootloader Team shim CVSS 3.1HIGH 7.8
  • TI-2023-21353 Shim: interger overflow leads to heap buffer overflow in verify_sbat_section on 32-bits systems CVSS 3.1HIGH 7.4
  • TI-2023-21354 Shim: out-of-bounds read in verify_buffer_authenticode() malformed pe file CVSS 3.1MEDIUM 6.2
  • TI-2023-21351 Shim: out-of-bounds read printing error messages CVSS 3.1MEDIUM 6.2
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences