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TI-2008-05226 Aliases CVE-2008-5510GHSA-h25j-67c9-vc8j

The CSS parser in Mozilla Firefox 3.x before 3.0.5 and 2.x before 2.0.0.19, Thunderbird…

Priority LOW 27Published · 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
None · Partial · None
Fix status
Fixed

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

Summary

The CSS parser in Mozilla Firefox 3.x before 3.0.5 and 2.x before 2.0.0.19, Thunderbird 2.x before 2.0.0.19, and SeaMonkey 1.x before 1.1.14 ignores the '\0' escaped null character, which might allow remote attackers to bypass protection mechanisms such as sanitization routines.

Why it matters now

EPSS 0.02212 82nd 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 · 8

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*2.0 to before 2.0.0.19; 3.0 to before 3.0.5VulnerableMozilla
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*1.0 to before 1.1.14VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*2.0 to before 2.0.0.19VulnerableMozilla
cpe:2.3:o:canonical:ubuntu_linux:7.10:*:*:*:*:*:*:*7.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:lts:*:*:*8.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*8.10VulnerableCanonical
cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*4.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*5.0VulnerableDebian
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions 2.0 to before 2.0.0.19; 3.0 to before 3.0.5 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:* Versions 1.0 to before 1.1.14 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions 2.0 to before 2.0.0.19 Vulnerable ·Mozilla
  • cpe:2.3:o:canonical:ubuntu_linux:7.10:*:*:*:*:*:*:* Versions 7.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:lts:*:*:* Versions 8.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:* Versions 8.10 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Debian

Remediation

Red Hat 1 advisory

  • RHSA-2008:1036 Released 2008-12-17 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux (v. 5 server) firefox-3.0.5-1.el5_2, firefox-3.0.5-1.el5_2.i386, firefox-3.0.5-1.el5_2.ia64 +37
    • Red Hat Enterprise Linux AS version 4 firefox-3.0.5-1.el4, firefox-3.0.5-1.el4.i386, firefox-3.0.5-1.el4.ia64 +17
    • Red Hat Enterprise Linux Desktop (v. 5 client) firefox-3.0.5-1.el5_2, firefox-3.0.5-1.el5_2.i386, nspr-4.7.3-2.el5 +7
    • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) nspr-4.7.3-2.el5, nspr-devel-4.7.3-2.el5, nspr-devel-4.7.3-2.el5.i386 +10
    • Red Hat Enterprise Linux Desktop version 4 firefox-3.0.5-1.el4, firefox-3.0.5-1.el4.i386, nspr-4.7.3-1.el4 +7
    • Red Hat Enterprise Linux ES version 4 firefox-3.0.5-1.el4, firefox-3.0.5-1.el4.i386, firefox-3.0.5-1.el4.ia64 +12
    • Red Hat Enterprise Linux WS version 4 firefox-3.0.5-1.el4, firefox-3.0.5-1.el4.i386, firefox-3.0.5-1.el4.ia64 +12

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2008:1036
Red Hat Enterprise Linux AS version 4Fixed RHSA-2008:1036
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2008:1036
Red Hat Enterprise Linux Desktop Workstation (v. 5 client)Fixed RHSA-2008:1036
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2008:1036
Red Hat Enterprise Linux ES version 4Fixed RHSA-2008:1036
Red Hat Enterprise Linux WS version 4Fixed RHSA-2008:1036

Timeline

  1. 2026-10-02 Threatist record created from CVE-2008-5510
  2. 2026-10-03 Alias added: GHSA-h25j-67c9-vc8j

References

Advisory 14

Sources

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