Read the docs
TI-2010-00001 Aliases CVE-2010-0001GHSA-pqhm-g528-h5pg

Integer underflow in the unlzw function in unlzw.c in gzip before 1.4 on 64-bit…

Priority LOW 38CWE-189Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
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-189 and the CVSS impact.

Summary

Integer underflow in the unlzw function in unlzw.c in gzip before 1.4 on 64-bit platforms, as used in ncompress and probably others, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted archive that uses LZW compression, leading to an array index error.

Why it matters now

EPSS 0.04774 91st percentileScored 2026-11-07
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 · 16

CPEVersionsRoleVendor
cpe:2.3:a:gnu:gzip:*:*:*:*:*:*:*:*up to 1.3.13VulnerableGNU
cpe:2.3:a:gnu:gzip:1.2.4:*:*:*:*:*:*:*1.2.4VulnerableGNU
cpe:2.3:a:gnu:gzip:1.2.4a:*:*:*:*:*:*:*1.2.4aVulnerableGNU
cpe:2.3:a:gnu:gzip:1.3:*:*:*:*:*:*:*1.3VulnerableGNU
cpe:2.3:a:gnu:gzip:1.3.1:*:*:*:*:*:*:*1.3.1VulnerableGNU
cpe:2.3:a:gnu:gzip:1.3.2:*:*:*:*:*:*:*1.3.2VulnerableGNU
cpe:2.3:a:gnu:gzip:1.3.3:*:*:*:*:*:*:*1.3.3VulnerableGNU
cpe:2.3:a:gnu:gzip:1.3.4:*:*:*:*:*:*:*1.3.4VulnerableGNU
cpe:2.3:a:gnu:gzip:1.3.5:*:*:*:*:*:*:*1.3.5VulnerableGNU
cpe:2.3:a:gnu:gzip:1.3.6:*:*:*:*:*:*:*1.3.6VulnerableGNU
  • cpe:2.3:a:gnu:gzip:*:*:*:*:*:*:*:* Versions up to 1.3.13 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.2.4:*:*:*:*:*:*:* Versions 1.2.4 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.2.4a:*:*:*:*:*:*:* Versions 1.2.4a Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.3:*:*:*:*:*:*:* Versions 1.3 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.3.1:*:*:*:*:*:*:* Versions 1.3.1 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.3.2:*:*:*:*:*:*:* Versions 1.3.2 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.3.3:*:*:*:*:*:*:* Versions 1.3.3 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.3.4:*:*:*:*:*:*:* Versions 1.3.4 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.3.5:*:*:*:*:*:*:* Versions 1.3.5 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.3.6:*:*:*:*:*:*:* Versions 1.3.6 Vulnerable ·GNU
Show 6 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:gnu:gzip:1.3.7:*:*:*:*:*:*:*1.3.7VulnerableGNU
cpe:2.3:a:gnu:gzip:1.3.8:*:*:*:*:*:*:*1.3.8VulnerableGNU
cpe:2.3:a:gnu:gzip:1.3.9:*:*:*:*:*:*:*1.3.9VulnerableGNU
cpe:2.3:a:gnu:gzip:1.3.10:*:*:*:*:*:*:*1.3.10VulnerableGNU
cpe:2.3:a:gnu:gzip:1.3.11:*:*:*:*:*:*:*1.3.11VulnerableGNU
cpe:2.3:a:gnu:gzip:1.3.12:*:*:*:*:*:*:*1.3.12VulnerableGNU
  • cpe:2.3:a:gnu:gzip:1.3.7:*:*:*:*:*:*:* Versions 1.3.7 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.3.8:*:*:*:*:*:*:* Versions 1.3.8 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.3.9:*:*:*:*:*:*:* Versions 1.3.9 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.3.10:*:*:*:*:*:*:* Versions 1.3.10 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.3.11:*:*:*:*:*:*:* Versions 1.3.11 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gzip:1.3.12:*:*:*:*:*:*:* Versions 1.3.12 Vulnerable ·GNU

Remediation

Red Hat 1 advisory

  • RHSA-2010:0061 Released 2010-01-20 · Red Hat rating Moderate
    gzip security update
    • Red Hat Desktop version 3 gzip-1.3.3-15.rhel3, gzip-1.3.3-15.rhel3.i386
    • Red Hat Enterprise Linux (v. 5 server) gzip-1.3.5-11.el5_4.1, gzip-1.3.5-11.el5_4.1.i386, gzip-1.3.5-11.el5_4.1.ia64 +1
    • Red Hat Enterprise Linux AS version 3 gzip-1.3.3-15.rhel3, gzip-1.3.3-15.rhel3.i386, gzip-1.3.3-15.rhel3.ia64 +1
    • Red Hat Enterprise Linux AS version 4 gzip-1.3.3-18.el4_8.1, gzip-1.3.3-18.el4_8.1.i386, gzip-1.3.3-18.el4_8.1.ia64 +1
    • Red Hat Enterprise Linux Desktop (v. 5 client) gzip-1.3.5-11.el5_4.1, gzip-1.3.5-11.el5_4.1.i386
    • Red Hat Enterprise Linux Desktop version 4 gzip-1.3.3-18.el4_8.1, gzip-1.3.3-18.el4_8.1.i386
    • Red Hat Enterprise Linux ES version 3 gzip-1.3.3-15.rhel3, gzip-1.3.3-15.rhel3.i386, gzip-1.3.3-15.rhel3.ia64
    • Red Hat Enterprise Linux ES version 4 gzip-1.3.3-18.el4_8.1, gzip-1.3.3-18.el4_8.1.i386, gzip-1.3.3-18.el4_8.1.ia64
    • Red Hat Enterprise Linux WS version 3 gzip-1.3.3-15.rhel3, gzip-1.3.3-15.rhel3.i386, gzip-1.3.3-15.rhel3.ia64
    • Red Hat Enterprise Linux WS version 4 gzip-1.3.3-18.el4_8.1, gzip-1.3.3-18.el4_8.1.i386, gzip-1.3.3-18.el4_8.1.ia64

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Desktop version 3Fixed RHSA-2010:0061
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2010:0061
Red Hat Enterprise Linux AS version 3Fixed RHSA-2010:0061
Red Hat Enterprise Linux AS version 4Fixed RHSA-2010:0061
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2010:0061
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2010:0061
Red Hat Enterprise Linux ES version 3Fixed RHSA-2010:0061
Red Hat Enterprise Linux ES version 4Fixed RHSA-2010:0061
Red Hat Enterprise Linux WS version 3Fixed RHSA-2010:0061
Red Hat Enterprise Linux WS version 4Fixed RHSA-2010:0061

Timeline

  1. 2026-10-02 Threatist record created from CVE-2010-0001
  2. 2026-10-03 Alias added: GHSA-pqhm-g528-h5pg

References

Advisory 12

Other 11

  • TI-2022-01156 Improper input validation in gzip, xz-utils CVSS 3.1HIGH 8.8
  • TI-2004-00544 gzexe in gzip 1.3.3 and earlier will execute an argument when the creation of a temp file… CVSS 2.0HIGH 10.0
  • TI-2001-01181 Buffer overflows in gzip 1.3x, 1.2.4, and other versions might allow attackers to execute… CVSS 2.0HIGH 7.5
  • TI-2009-02508 The huft_build function in inflate.c in gzip before 1.3.13 creates a hufts (aka huffman)… CVSS 2.0MEDIUM 6.8
  • TI-2026-30386 Global Buffer Overflow in GNU gzip CVSS 4.0MEDIUM 6.9
  • TI-2005-01163 Directory traversal vulnerability in gunzip -N in gzip 1.2.4 through 1.3.5 allows remote… CVSS 2.0MEDIUM 5.0
See all 12 →

Sources

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