CVE-2009-0801 (GCVE-0-2009-0801)
Vulnerability from cvelistv5 – Published: 2009-03-04 16:00 – Updated: 2024-09-17 03:55
VLAI
EPSS
VEX
Summary
Squid, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/33858 | vdb-entryx_refsource_BID |
| http://www.kb.cert.org/vuls/id/435052 | third-party-advisoryx_refsource_CERT-VN |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-07T04:48:52.207Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "33858",
"tags": [
"vdb-entry",
"x_refsource_BID",
"x_transferred"
],
"url": "http://www.securityfocus.com/bid/33858"
},
{
"name": "VU#435052",
"tags": [
"third-party-advisory",
"x_refsource_CERT-VN",
"x_transferred"
],
"url": "http://www.kb.cert.org/vuls/id/435052"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Squid, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2009-03-04T16:00:00.000Z",
"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"shortName": "mitre"
},
"references": [
{
"name": "33858",
"tags": [
"vdb-entry",
"x_refsource_BID"
],
"url": "http://www.securityfocus.com/bid/33858"
},
{
"name": "VU#435052",
"tags": [
"third-party-advisory",
"x_refsource_CERT-VN"
],
"url": "http://www.kb.cert.org/vuls/id/435052"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "cve@mitre.org",
"ID": "CVE-2009-0801",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "n/a",
"version": {
"version_data": [
{
"version_value": "n/a"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Squid, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "33858",
"refsource": "BID",
"url": "http://www.securityfocus.com/bid/33858"
},
{
"name": "VU#435052",
"refsource": "CERT-VN",
"url": "http://www.kb.cert.org/vuls/id/435052"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2009-0801",
"datePublished": "2009-03-04T16:00:00.000Z",
"dateReserved": "2009-03-04T00:00:00.000Z",
"dateUpdated": "2024-09-17T03:55:01.224Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2009-0801",
"date": "2026-11-02",
"epss": "0.03089",
"percentile": "0.87712"
},
"fkie_nvd": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:2.7:*:*:*:*:*:*:*",
"matchCriteriaId": "59B8B26B-B58B-4A84-95BF-A271FEE36F4F",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:2.7.stable5:*:*:*:*:*:*:*",
"matchCriteriaId": "47A0A485-9C22-4A1E-9224-F777C8407013",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:2.7.stable6:*:*:*:*:*:*:*",
"matchCriteriaId": "6CC68017-20A2-4519-94AD-1A720692323C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0:*:*:*:*:*:*:*",
"matchCriteriaId": "18A99A70-46CE-4F1F-BC50-A9A32DBB511E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_pre1:*:*:*:*:*:*:*",
"matchCriteriaId": "64F8F1B9-A281-47C0-88EB-417A6A5B9F00",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_pre2:*:*:*:*:*:*:*",
"matchCriteriaId": "0EECA433-3770-4ADE-8962-181FCC3590E2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_pre3:*:*:*:*:*:*:*",
"matchCriteriaId": "28613D22-9E8B-4231-9AC9-523D506A200A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable1:*:*:*:*:*:*:*",
"matchCriteriaId": "5F8DBB70-1047-451D-9853-8FA404A307FF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable2:*:*:*:*:*:*:*",
"matchCriteriaId": "26EBDB74-8847-4FBD-B638-677CFEF6C062",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable3:*:*:*:*:*:*:*",
"matchCriteriaId": "5B4C1903-AE1A-46E1-9095-4656BEA54754",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable4:*:*:*:*:*:*:*",
"matchCriteriaId": "5CE8DDCB-0371-4220-A43E-946153EB02FE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable5:*:*:*:*:*:*:*",
"matchCriteriaId": "ED179F50-3DCA-4853-875E-BCB684FF1D8E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable6:*:*:*:*:*:*:*",
"matchCriteriaId": "0BE6BD41-C6DB-442B-9844-9792255EB268",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable7:*:*:*:*:*:*:*",
"matchCriteriaId": "A29F22EA-DFC8-407D-9A08-0981AFA97A2B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable12:*:*:*:*:*:*:*",
"matchCriteriaId": "6E1D7E85-BBB6-4D8F-8543-9E0A0068DD74",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable13:*:*:*:*:*:*:*",
"matchCriteriaId": "55F27E45-FD71-46C1-80F9-4A4145DE2A50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Squid, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header."
},
{
"lang": "es",
"value": "Squid cuando el modo de interceptaci\u00f3n trasparente est\u00e1 habilitado, utiliza la cabecera HTTP Host para determinar el punto final remoto, esto permite a atacantes remotos evitar los controles de acceso para Flash, Java, Silverlight y puede que otras tecnolog\u00edas y permite que se comunique con sitios de intranet restringidos a trav\u00e9s de una p\u00e1gina Web manipulada que provoca que un cliente env\u00ede solicitudes HTTP con una cabecera Host modificada."
}
],
"id": "CVE-2009-0801",
"lastModified": "2024-11-21T01:00:56.707",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "HIGH",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:H/Au:N/C:C/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 4.9,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
]
},
"published": "2009-03-04T16:30:00.170",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "http://www.kb.cert.org/vuls/id/435052"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/bid/33858"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "http://www.kb.cert.org/vuls/id/435052"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/33858"
}
],
"sourceIdentifier": "cve@mitre.org",
"vendorComments": [
{
"comment": "Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2009-0801\n\nThe Red Hat Security Response Team has rated this issue as having low security impact, a future update may address this flaw. More information regarding issue severity can be found here: http://www.redhat.com/security/updates/classification/",
"lastModified": "2009-03-09T00:00:00",
"organization": "Red Hat"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-264"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"nvd": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:2.7:*:*:*:*:*:*:*",
"matchCriteriaId": "59B8B26B-B58B-4A84-95BF-A271FEE36F4F",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:2.7.stable5:*:*:*:*:*:*:*",
"matchCriteriaId": "47A0A485-9C22-4A1E-9224-F777C8407013",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:2.7.stable6:*:*:*:*:*:*:*",
"matchCriteriaId": "6CC68017-20A2-4519-94AD-1A720692323C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0:*:*:*:*:*:*:*",
"matchCriteriaId": "18A99A70-46CE-4F1F-BC50-A9A32DBB511E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_pre1:*:*:*:*:*:*:*",
"matchCriteriaId": "64F8F1B9-A281-47C0-88EB-417A6A5B9F00",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_pre2:*:*:*:*:*:*:*",
"matchCriteriaId": "0EECA433-3770-4ADE-8962-181FCC3590E2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_pre3:*:*:*:*:*:*:*",
"matchCriteriaId": "28613D22-9E8B-4231-9AC9-523D506A200A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable1:*:*:*:*:*:*:*",
"matchCriteriaId": "5F8DBB70-1047-451D-9853-8FA404A307FF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable2:*:*:*:*:*:*:*",
"matchCriteriaId": "26EBDB74-8847-4FBD-B638-677CFEF6C062",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable3:*:*:*:*:*:*:*",
"matchCriteriaId": "5B4C1903-AE1A-46E1-9095-4656BEA54754",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable4:*:*:*:*:*:*:*",
"matchCriteriaId": "5CE8DDCB-0371-4220-A43E-946153EB02FE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable5:*:*:*:*:*:*:*",
"matchCriteriaId": "ED179F50-3DCA-4853-875E-BCB684FF1D8E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable6:*:*:*:*:*:*:*",
"matchCriteriaId": "0BE6BD41-C6DB-442B-9844-9792255EB268",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable7:*:*:*:*:*:*:*",
"matchCriteriaId": "A29F22EA-DFC8-407D-9A08-0981AFA97A2B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable12:*:*:*:*:*:*:*",
"matchCriteriaId": "6E1D7E85-BBB6-4D8F-8543-9E0A0068DD74",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid:squid_web_proxy_cache:3.0_stable13:*:*:*:*:*:*:*",
"matchCriteriaId": "55F27E45-FD71-46C1-80F9-4A4145DE2A50",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Squid, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header."
},
{
"lang": "es",
"value": "Squid cuando el modo de interceptaci\u00f3n trasparente est\u00e1 habilitado, utiliza la cabecera HTTP Host para determinar el punto final remoto, esto permite a atacantes remotos evitar los controles de acceso para Flash, Java, Silverlight y puede que otras tecnolog\u00edas y permite que se comunique con sitios de intranet restringidos a trav\u00e9s de una p\u00e1gina Web manipulada que provoca que un cliente env\u00ede solicitudes HTTP con una cabecera Host modificada."
}
],
"id": "CVE-2009-0801",
"lastModified": "2026-04-23T00:35:47.467",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "HIGH",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:H/Au:N/C:C/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 4.9,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
]
},
"published": "2009-03-04T16:30:00.170",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "http://www.kb.cert.org/vuls/id/435052"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/bid/33858"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "http://www.kb.cert.org/vuls/id/435052"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/33858"
}
],
"sourceIdentifier": "cve@mitre.org",
"vendorComments": [
{
"comment": "Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2009-0801\n\nThe Red Hat Security Response Team has rated this issue as having low security impact, a future update may address this flaw. More information regarding issue severity can be found here: http://www.redhat.com/security/updates/classification/",
"lastModified": "2009-03-09T00:00:00",
"organization": "Red Hat"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-264"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2025-11-21T13:12:58+00:00",
"cve": "CVE-2009-0801",
"id": "CVE-2009-0801",
"initial_release_date": "2009-02-23T00:00:00+00:00",
"product_status:known_affected": "4",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "squid: remote bypass of access controls",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2009/cve-2009-0801.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "low",
"current_release_date": "2026-05-05T02:00:26Z",
"cve": "CVE-2009-0801",
"id": "CVE-2009-0801",
"initial_release_date": "2023-02-15T06:04:51Z",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2009-0801",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2009-0801.json",
"version": "4"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
Loading timeline…
Loading…
Loading…
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.
Loading…
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.