Read the docs
TI-2005-02719 Aliases CVE-2005-2871GHSA-h4c5-jq2c-gq8v

Buffer overflow in the International Domain Name (IDN) support in Mozilla Firefox 1.0.6…

Priority MEDIUM 52Published · Updated

Key facts

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

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

Buffer overflow in the International Domain Name (IDN) support in Mozilla Firefox 1.0.6 and earlier, and Netscape 8.0.3.3 and 7.2, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a hostname with all "soft" hyphens (character 0xAD), which is not properly handled by the NormalizeIDN call in nsStandardURL::BuildNormalizedSpec.

Why it matters now

EPSS 0.21112 97th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed Red Hat: 2 advisories

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 · 8

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:*1.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox:1.0.1:*:*:*:*:*:*:*1.0.1VulnerableMozilla
cpe:2.3:a:mozilla:firefox:1.0.2:*:*:*:*:*:*:*1.0.2VulnerableMozilla
cpe:2.3:a:mozilla:firefox:1.0.3:*:*:*:*:*:*:*1.0.3VulnerableMozilla
cpe:2.3:a:mozilla:firefox:1.0.4:*:*:*:*:*:*:*1.0.4VulnerableMozilla
cpe:2.3:a:mozilla:firefox:1.0.5:*:*:*:*:*:*:*1.0.5VulnerableMozilla
cpe:2.3:a:mozilla:firefox:1.0.6:*:*:*:*:*:*:*1.0.6VulnerableMozilla
cpe:2.3:a:mozilla:firefox:1.5:beta1:*:*:*:*:*:*1.5 beta1VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:1.0.1:*:*:*:*:*:*:* Versions 1.0.1 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:1.0.2:*:*:*:*:*:*:* Versions 1.0.2 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:1.0.3:*:*:*:*:*:*:* Versions 1.0.3 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:1.0.4:*:*:*:*:*:*:* Versions 1.0.4 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:1.0.5:*:*:*:*:*:*:* Versions 1.0.5 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:1.0.6:*:*:*:*:*:*:* Versions 1.0.6 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:1.5:beta1:*:*:*:*:*:* Versions 1.5 beta1 Vulnerable ·Mozilla

Remediation

Red Hat 2 advisories

  • RHSA-2005:791 Released 2005-10-06 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AS version 4 thunderbird-1.0.7-1.4.1, thunderbird-1.0.7-1.4.1.i386, thunderbird-1.0.7-1.4.1.ia64 +1
    • Red Hat Enterprise Linux Desktop version 4 thunderbird-1.0.7-1.4.1, thunderbird-1.0.7-1.4.1.i386
    • Red Hat Enterprise Linux ES version 4 thunderbird-1.0.7-1.4.1, thunderbird-1.0.7-1.4.1.i386, thunderbird-1.0.7-1.4.1.ia64
    • Red Hat Enterprise Linux WS version 4 thunderbird-1.0.7-1.4.1, thunderbird-1.0.7-1.4.1.i386, thunderbird-1.0.7-1.4.1.ia64
  • RHSA-2005:768 Released 2005-09-09 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux AS version 4 firefox-1.0.6-1.4.2, firefox-1.0.6-1.4.2.i386, firefox-1.0.6-1.4.2.ia64 +1
    • Red Hat Enterprise Linux Desktop version 4 firefox-1.0.6-1.4.2, firefox-1.0.6-1.4.2.i386
    • Red Hat Enterprise Linux ES version 4 firefox-1.0.6-1.4.2, firefox-1.0.6-1.4.2.i386, firefox-1.0.6-1.4.2.ia64
    • Red Hat Enterprise Linux WS version 4 firefox-1.0.6-1.4.2, firefox-1.0.6-1.4.2.i386, firefox-1.0.6-1.4.2.ia64

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux AS version 4Fixed RHSA-2005:768, RHSA-2005:791
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2005:768, RHSA-2005:791
Red Hat Enterprise Linux ES version 4Fixed RHSA-2005:768, RHSA-2005:791
Red Hat Enterprise Linux WS version 4Fixed RHSA-2005:768, RHSA-2005:791

Timeline

  1. 2026-10-02 Threatist record created from CVE-2005-2871
  2. 2026-10-03 Alias added: GHSA-h4c5-jq2c-gq8v

References

Exploit 2

Advisory 13

Other 12

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 3444 →

Sources

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