firefox: does not properly prevent the literal rendering of homoglyph characters in IDN domain names (spoof URLs and conduct phishing attacks)
Published Feb 20, 2009
5.8
MEDIUMCVSS 2.0
EPSS 1.50%
Description
The Internationalized Domain Names (IDN) blacklist in Mozilla Firefox 3.0.6 and other versions before 3.0.9; Thunderbird before 2.0.0.21; and SeaMonkey before 1.1.15 does not include box-drawing characters, which allows remote attackers to spoof URLs and conduct phishing attacks, as demonstrated by homoglyphs of the / (slash) and ? (question mark) characters in a subdomain of a .cn domain name, a different vulnerability than CVE-2005-0233. NOTE: some third parties claim that 3.0.6 is not affected, but much older versions perhaps are affected.
Affected products
No data.
- ≤ 3.0.6
- 1.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 1.5
- 1.5.0.1
- 1.5.0.2
- 1.5.0.3
- 1.5.0.4
- 1.5.0.5
- 1.5.0.6
- 1.5.0.7
- 1.5.0.8
- 1.5.0.9
- 1.5.0.10
- 1.5.0.11
- 1.5.0.12
- 2.0
- 2.0.0.1
- 2.0.0.2
- 2.0.0.3
- 2.0.0.4
- 2.0.0.5
- 2.0.0.6
- 2.0.0.7
- 2.0.0.8
- 2.0.0.9
- 2.0.0.10
- 2.0.0.11
- 2.0.0.12
- 2.0.0.13
- 2.0.0.14
- 2.0.0.15
- 2.0.0.16
- 2.0.0.17
- 2.0.0.18
- 2.0.0.19
- 2.0.0.20
- 3.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.0.4
- 3.0.5
- ≤ 1.1.14
- 1.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 1.0.9
- 1.1
- 1.1
- 1.1
- 1.1.1
- 1.1.2
- 1.1.3
- 1.1.4
- 1.1.5
- 1.1.6
- 1.1.7
- 1.1.8
- 1.1.9
- 1.1.10
- 1.1.11
- 1.1.12
- 1.1.13
- ≤ 2.0.0.20
- 2.0.0.0
- 2.0.0.4
- 2.0.0.5
- 2.0.0.6
- 2.0.0.9
- 2.0.0.12
- 2.0.0.14
- 2.0.0.16
- 2.0.0.17
- 2.0.0.18
- 2.0.0.19
No data.
Red Hat Enterprise Linux 2.1
seamonkey-0:1.0.9-0.33.el2
Fixed · RHSA-2009:0437
Red Hat Enterprise Linux 3
seamonkey-0:1.0.9-0.37.el3
Fixed · RHSA-2009:0437
Red Hat Enterprise Linux 4
firefox-0:3.0.9-1.el4
Fixed · RHSA-2009:0436
Red Hat Enterprise Linux 4
seamonkey-0:1.0.9-41.el4
Fixed · RHSA-2009:0437
Red Hat Enterprise Linux 5
firefox-0:3.0.9-1.el5
Fixed · RHSA-2009:0436
Red Hat Enterprise Linux 5
xulrunner-0:1.9.0.9-1.el5
Fixed · RHSA-2009:0436
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 2.1 | seamonkey-0:1.0.9-0.33.el2 | Fixed | RHSA-2009:0437 |
| Red Hat Enterprise Linux 3 | seamonkey-0:1.0.9-0.37.el3 | Fixed | RHSA-2009:0437 |
| Red Hat Enterprise Linux 4 | firefox-0:3.0.9-1.el4 | Fixed | RHSA-2009:0436 |
| Red Hat Enterprise Linux 4 | seamonkey-0:1.0.9-41.el4 | Fixed | RHSA-2009:0437 |
| Red Hat Enterprise Linux 5 | firefox-0:3.0.9-1.el5 | Fixed | RHSA-2009:0436 |
| Red Hat Enterprise Linux 5 | xulrunner-0:1.9.0.9-1.el5 | Fixed | RHSA-2009:0436 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.50% (0.01497) | 73.27th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.50% (0.01497) | 70.77th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.13% (0.02133) | 82.63th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.28% (0.06279) | 84.45th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.13% (0.02133) | 83.00th | v4 (v2025.03.14) |
| Dec 17, 2024 | 2.74% (0.02737) | 90.26th | v3 (v2023.03.01) |
| Jul 13, 2024 | 0.92% (0.00917) | 83.04th | v3 (v2023.03.01) |
| Oct 1, 2023 | 0.92% (0.00917) | 81.04th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.88% (0.00879) | 79.99th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.93% (0.03932) | 85.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.93% (0.03932) | 84.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.93% (0.03932) | 67.70th | v2 (v2022.01.01) |
No CWE recorded.
References (27)
- http://lists.immunitysec.com/pipermail/dailydave/2009-February/005556.html mailing-listx_refsource_MLIST
- http://lists.immunitysec.com/pipermail/dailydave/2009-February/005563.html mailing-listx_refsource_MLIST
- http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2009-0437.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/34096 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/34843 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/34844 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/34894 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/35042 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/35065 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.blackhat.com/html/bh-dc-09/bh-dc-09-speakers.html#Marlinspike x_refsource_MISC
- http://www.debian.org/security/2009/dsa-1797 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2009/dsa-1830 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:111 vendor-advisoryx_refsource_MANDRIVA
- http://www.mozilla.org/security/announce/2009/mfsa2009-15.html x_refsource_CONFIRM
- http://www.redhat.com/support/errata/RHSA-2009-0436.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/33837 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2009/1125 vdb-entryx_refsource_VUPENVendor Advisory
- https://access.redhat.com/security/cve/CVE-2009-0652 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=486704 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/48974 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2009-0652
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11396 vdb-entrysignaturex_refsource_OVAL
- https://usn.ubuntu.com/764-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.blackhat.com/presentations/bh-dc-09/Marlinspike/BlackHat-DC-09-Marlinspike-Defeating-SSL.pdf x_refsource_MISC
- https://www.cve.org/CVERecord?id=CVE-2009-0652
- https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00683.html vendor-advisoryx_refsource_FEDORA
Change history (0)
No recorded changes yet.