CVE-2009-0652
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…
Does this matter?
Lower severity and a low EPSS score (1.50%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 5.8 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:P
- EPSS
- 1.50% probability · 74th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- mozilla/firefox · mozilla/seamonkey · mozilla/thunderbird
- Source
- cve@mitre.org
EPSS 1.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.immunitysec.com/pipermail/dailydave/2009-February/005556.html
- http://lists.immunitysec.com/pipermail/dailydave/2009-February/005563.html
- http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html
- http://rhn.redhat.com/errata/RHSA-2009-0437.html
- http://secunia.com/advisories/34096Vendor Advisory
- http://secunia.com/advisories/34843Vendor Advisory
- http://secunia.com/advisories/34844Vendor Advisory
- http://secunia.com/advisories/34894Vendor Advisory
- http://secunia.com/advisories/35042Vendor Advisory
- http://secunia.com/advisories/35065Vendor Advisory
- http://www.blackhat.com/html/bh-dc-09/bh-dc-09-speakers.html#Marlinspike
- http://www.debian.org/security/2009/dsa-1797
- http://www.debian.org/security/2009/dsa-1830
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:111
- http://www.mozilla.org/security/announce/2009/mfsa2009-15.html
- http://www.redhat.com/support/errata/RHSA-2009-0436.html
- http://www.securityfocus.com/bid/33837
- http://www.vupen.com/english/advisories/2009/1125Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/48974
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11396
- https://usn.ubuntu.com/764-1/
- https://www.blackhat.com/presentations/bh-dc-09/Marlinspike/BlackHat-DC-09-Marlinspike-Defeating-SSL.pdf
- https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00683.html
- http://lists.immunitysec.com/pipermail/dailydave/2009-February/005556.html
- http://lists.immunitysec.com/pipermail/dailydave/2009-February/005563.html
- http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html
- http://rhn.redhat.com/errata/RHSA-2009-0437.html
- http://secunia.com/advisories/34096Vendor Advisory
- http://secunia.com/advisories/34843Vendor Advisory
- http://secunia.com/advisories/34844Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.