CVE-2009-0777 (GCVE-0-2009-0777)
Vulnerability from cvelistv5 – Published: 2009-03-05 02:00 – Updated: 2024-08-07 04:48
VLAI
EPSS
VEX
Summary
Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey before 1.1.15 decode invisible characters when they are displayed in the location bar, which causes an incorrect address to be displayed and makes it easier for remote attackers to spoof URLs and conduct phishing attacks.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
19 references
Date Public
2009-03-04 00:00
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{
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{
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{
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{
"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*",
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"versionEndIncluding": "2.0.0.20",
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},
{
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},
{
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"matchCriteriaId": "AC7EAB8D-CA40-4C29-99DF-24FF1753BCF9",
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},
{
"criteria": "cpe:2.3:a:mozilla:thunderbird:2.0.0.5:*:*:*:*:*:*:*",
"matchCriteriaId": "5C9218A9-DA27-436A-AC93-F465FC14ECF3",
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},
{
"criteria": "cpe:2.3:a:mozilla:thunderbird:2.0.0.6:*:*:*:*:*:*:*",
"matchCriteriaId": "E66503D7-72CB-42A5-8C85-D9579EF2C0A5",
"vulnerable": true
},
{
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"matchCriteriaId": "B373B409-0939-4707-99F1-95B121BFF7FC",
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{
"criteria": "cpe:2.3:a:mozilla:thunderbird:2.0.0.12:*:*:*:*:*:*:*",
"matchCriteriaId": "E80CA1DE-B920-4E28-BEFC-574148D19A0D",
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},
{
"criteria": "cpe:2.3:a:mozilla:thunderbird:2.0.0.14:*:*:*:*:*:*:*",
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{
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{
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{
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{
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"matchCriteriaId": "6DF479C3-95A0-414F-B47B-C94BE95713D1",
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey before 1.1.15 decode invisible characters when they are displayed in the location bar, which causes an incorrect address to be displayed and makes it easier for remote attackers to spoof URLs and conduct phishing attacks."
},
{
"lang": "es",
"value": "Mozilla Firefox en versiones anteriores a 3.0.7, Thunderbird en versiones anteriores 2.0.0.21 y SeaMonkey en versiones anteriores a 1.1.15, decodifican caracteres invisibles cuando son desplegados en la barra de ubicaci\u00f3n, lo que causa que se muestre una direcci\u00f3n incorrecta y hace m\u00e1s f\u00e1cil para los atacantes remotos falsificar URL y realizar ataques de phishing."
}
],
"id": "CVE-2009-0777",
"lastModified": "2026-06-16T23:05:47.543",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.8,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
]
},
"published": "2009-03-05T02:30:00.500",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00002.html"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/34140"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/34145"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/34272"
},
{
"source": "secalert@redhat.com",
"url": "http://securitytracker.com/alerts/2009/Mar/1021799.html"
},
{
"source": "secalert@redhat.com",
"url": "http://support.avaya.com/elmodocs2/security/ASA-2009-069.htm"
},
{
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"url": "http://support.avaya.com/japple/css/japple?temp.documentID=366362\u0026temp.productID=154235\u0026temp.releaseID=361845\u0026temp.bucketID=126655\u0026PAGE=Document"
},
{
"source": "secalert@redhat.com",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2009:075"
},
{
"source": "secalert@redhat.com",
"tags": [
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],
"url": "http://www.mozilla.org/security/announce/2009/mfsa2009-11.html"
},
{
"source": "secalert@redhat.com",
"url": "http://www.redhat.com/support/errata/RHSA-2009-0315.html"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securityfocus.com/bid/33990"
},
{
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"tags": [
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],
"url": "http://www.vupen.com/english/advisories/2009/0632"
},
{
"source": "secalert@redhat.com",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=452979"
},
{
"source": "secalert@redhat.com",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/49087"
},
{
"source": "secalert@redhat.com",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11222"
},
{
"source": "secalert@redhat.com",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6039"
},
{
"source": "secalert@redhat.com",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6157"
},
{
"source": "secalert@redhat.com",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6229"
},
{
"source": "secalert@redhat.com",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7435"
},
{
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"url": "http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00002.html"
},
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"tags": [
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],
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},
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"tags": [
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],
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},
{
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],
"url": "http://secunia.com/advisories/34272"
},
{
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},
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},
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},
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},
{
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],
"url": "http://www.mozilla.org/security/announce/2009/mfsa2009-11.html"
},
{
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},
{
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},
{
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"tags": [
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],
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},
{
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"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=452979"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/49087"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11222"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6039"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6157"
},
{
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"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6229"
},
{
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"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7435"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2025-11-21T13:12:52+00:00",
"cve": "CVE-2009-0777",
"id": "CVE-2009-0777",
"initial_release_date": "2009-03-04T00:00:00+00:00",
"product_status:fixed": "159",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Firefox URL spoofing with invisible control characters",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2009/cve-2009-0777.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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