Uncontrolled resource consumption in hivex
Priority LOW 28CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 8 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-400.
Summary
A flaw was found in the hivex library. This flaw allows an attacker to input a specially crafted Windows Registry (hive) file, which would cause hivex to recursively call the _get_children() function, leading to a stack overflow. The highest threat from this vulnerability is to system availability.
Why it matters now
EPSS 0.05151 92nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 2 advisoriesRed Hat: 8 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | hivex | hivex-1.3.21 | — | No fix listed | CNA |
- hivex Vendor— Affected hivex-1.3.21 Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:redhat:hivex:*:*:*:*:*:*:*:* | before 1.3.21 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* | 8.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:* | 8.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 33 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 34 | Vulnerable | Fedoraproject |
- cpe:2.3:a:redhat:hivex:*:*:*:*:*:*:*:* Versions before 1.3.21 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* Versions 8.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:* Versions 8.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
Remediation
Red Hat 2 advisories
- RHSA-2022:1759 Released 2022-05-10 · Red Hat rating Moderatevirt:rhel and virt-devel:rhel security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) SLOF-20210217-1.module+el8.6.0+14480+c0a3aa0f.noarch::virt:rhel, SLOF-20210217-1.module+el8.6.0+14480+c0a3aa0f.src::virt:rhel, hivex-1.3.18-23.module+el8.6.0+14480+c0a3aa0f.aarch64::virt:rhel +47
- Red Hat Enterprise Linux CRB (v. 8) SLOF-20210217-1.module+el8.6.0+14480+c0a3aa0f.src::virt-devel:rhel, hivex-1.3.18-23.module+el8.6.0+14480+c0a3aa0f.i686::virt-devel:rhel, hivex-devel-1.3.18-23.module+el8.6.0+14480+c0a3aa0f.i686::virt-devel:rhel +47
- RHSA-2021:3338 Released 2021-08-31 · Red Hat rating Lowhivex security update
- Red Hat Enterprise Linux Client (v. 7) hivex-1.3.10-6.12.el7_9, perl-hivex-1.3.10-6.12.el7_9
- Red Hat Enterprise Linux Client Optional (v. 7) hivex-devel-1.3.10-6.12.el7_9, ocaml-hivex-1.3.10-6.12.el7_9, ocaml-hivex-devel-1.3.10-6.12.el7_9 +2
- Red Hat Enterprise Linux Server (v. 7) hivex-1.3.10-6.12.el7_9, perl-hivex-1.3.10-6.12.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7) hivex-devel-1.3.10-6.12.el7_9, ocaml-hivex-1.3.10-6.12.el7_9, ocaml-hivex-devel-1.3.10-6.12.el7_9 +2
- Red Hat Enterprise Linux Workstation (v. 7) hivex-1.3.10-6.12.el7_9, perl-hivex-1.3.10-6.12.el7_9
- Red Hat Enterprise Linux Workstation Optional (v. 7) hivex-devel-1.3.10-6.12.el7_9, ocaml-hivex-1.3.10-6.12.el7_9, ocaml-hivex-devel-1.3.10-6.12.el7_9 +2
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 Advanced Virtualization | Affected | No fix yet |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2022:1759 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2022:1759 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2021:3338 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2021:3338 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2021:3338 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2021:3338 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2021:3338 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2021:3338 |
Not affected: 1 product
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2021-3622
- 2026-10-03 Alias added: GHSA-rc2r-2mcx-6h65
References
Sources
- CVE-2021-3622 · CVE Program
- CVE-2021-3622 · NVD
- FIRST EPSS
- GHSA-rc2r-2mcx-6h65 · GitHub Advisory Database · CC BY 4.0
- CVE-2021-3622 · Red Hat security data · CC BY 4.0
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