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TI-2022-23920 Aliases CVE-2022-48303GHSA-h2v4-4v4p-2qvc

GNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of…

Priority MEDIUM 58CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 3 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.

Summary

GNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of uninitialized memory for a conditional jump. Exploitation to change the flow of control has not been demonstrated. The issue occurs in from_header in list.c via a V7 archive in which mtime has approximately 11 whitespace characters.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01493 74th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 3 advisoriesRed Hat: 3 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

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

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:*up to 1.34VulnerableGNU
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*37VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*38VulnerableFedoraproject
  • cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:* Versions up to 1.34 Vulnerable ·GNU
  • cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* Versions 37 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* Versions 38 Vulnerable ·Fedoraproject

Remediation

Red Hat 3 advisories

  • RHSA-2023:5610 Released 2023-10-10 · Red Hat rating Moderate
    tar security update
    • Red Hat Enterprise Linux BaseOS EUS (v.8.6) tar-2:1.30-5.el8_6.1
  • RHSA-2023:0959 Released 2023-02-28 · Red Hat rating Moderate
    tar security update
    • Red Hat Enterprise Linux BaseOS (v. 9) tar-2:1.34-6.el9_1
  • RHSA-2023:0842 Released 2023-02-21 · Red Hat rating Moderate
    tar security update
    • Red Hat Enterprise Linux BaseOS (v. 8) tar-2:1.30-6.el8_7.1

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2023:0842
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2023:0959
Red Hat Enterprise Linux BaseOS EUS (v.8.6)Fixed RHSA-2023:5610

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-48303
  2. 2026-10-03 Alias added: GHSA-h2v4-4v4p-2qvc

References

Exploit 1

Patch 1

Advisory 2

Sources

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