CVE-2016-4553 (GCVE-0-2016-4553)
Vulnerability from cvelistv5 – Published: 2016-05-10 19:00 – Updated: 2024-08-06 00:32
VLAI
EPSS
VEX
Summary
client_side.cc in Squid before 3.5.18 and 4.x before 4.0.10 does not properly ignore the Host header when absolute-URI is provided, which allows remote attackers to conduct cache-poisoning attacks via an HTTP request.
Severity
8.6 (High)
CWE
- n/a
Assigner
References
13 references
Date Public
2016-05-06 00:00
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-06T00:32:25.689Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "GLSA-201607-01",
"tags": [
"vendor-advisory",
"x_refsource_GENTOO",
"x_transferred"
],
"url": "https://security.gentoo.org/glsa/201607-01"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "http://bugs.squid-cache.org/show_bug.cgi?id=4501"
},
{
"name": "SUSE-SU-2016:1996",
"tags": [
"vendor-advisory",
"x_refsource_SUSE",
"x_transferred"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "http://www.squid-cache.org/Advisories/SQUID-2016_7.txt"
},
{
"name": "USN-2995-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU",
"x_transferred"
],
"url": "http://www.ubuntu.com/usn/USN-2995-1"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14039.patch"
},
{
"name": "RHSA-2016:1140",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT",
"x_transferred"
],
"url": "https://access.redhat.com/errata/RHSA-2016:1140"
},
{
"name": "openSUSE-SU-2016:2081",
"tags": [
"vendor-advisory",
"x_refsource_SUSE",
"x_transferred"
],
"url": "http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html"
},
{
"name": "RHSA-2016:1139",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT",
"x_transferred"
],
"url": "https://access.redhat.com/errata/RHSA-2016:1139"
},
{
"name": "SUSE-SU-2016:2089",
"tags": [
"vendor-advisory",
"x_refsource_SUSE",
"x_transferred"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html"
},
{
"name": "1035768",
"tags": [
"vdb-entry",
"x_refsource_SECTRACK",
"x_transferred"
],
"url": "http://www.securitytracker.com/id/1035768"
},
{
"name": "DSA-3625",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN",
"x_transferred"
],
"url": "http://www.debian.org/security/2016/dsa-3625"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"datePublic": "2016-05-06T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "client_side.cc in Squid before 3.5.18 and 4.x before 4.0.10 does not properly ignore the Host header when absolute-URI is provided, which allows remote attackers to conduct cache-poisoning attacks via an HTTP request."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2016-11-28T20:57:01.000Z",
"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"shortName": "mitre"
},
"references": [
{
"name": "GLSA-201607-01",
"tags": [
"vendor-advisory",
"x_refsource_GENTOO"
],
"url": "https://security.gentoo.org/glsa/201607-01"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://bugs.squid-cache.org/show_bug.cgi?id=4501"
},
{
"name": "SUSE-SU-2016:1996",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://www.squid-cache.org/Advisories/SQUID-2016_7.txt"
},
{
"name": "USN-2995-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU"
],
"url": "http://www.ubuntu.com/usn/USN-2995-1"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14039.patch"
},
{
"name": "RHSA-2016:1140",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2016:1140"
},
{
"name": "openSUSE-SU-2016:2081",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html"
},
{
"name": "RHSA-2016:1139",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2016:1139"
},
{
"name": "SUSE-SU-2016:2089",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html"
},
{
"name": "1035768",
"tags": [
"vdb-entry",
"x_refsource_SECTRACK"
],
"url": "http://www.securitytracker.com/id/1035768"
},
{
"name": "DSA-3625",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN"
],
"url": "http://www.debian.org/security/2016/dsa-3625"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "cve@mitre.org",
"ID": "CVE-2016-4553",
"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": "client_side.cc in Squid before 3.5.18 and 4.x before 4.0.10 does not properly ignore the Host header when absolute-URI is provided, which allows remote attackers to conduct cache-poisoning attacks via an HTTP request."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "GLSA-201607-01",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/201607-01"
},
{
"name": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html",
"refsource": "CONFIRM",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
},
{
"name": "http://bugs.squid-cache.org/show_bug.cgi?id=4501",
"refsource": "CONFIRM",
"url": "http://bugs.squid-cache.org/show_bug.cgi?id=4501"
},
{
"name": "SUSE-SU-2016:1996",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html"
},
{
"name": "http://www.squid-cache.org/Advisories/SQUID-2016_7.txt",
"refsource": "CONFIRM",
"url": "http://www.squid-cache.org/Advisories/SQUID-2016_7.txt"
},
{
"name": "USN-2995-1",
"refsource": "UBUNTU",
"url": "http://www.ubuntu.com/usn/USN-2995-1"
},
{
"name": "http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14039.patch",
"refsource": "CONFIRM",
"url": "http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14039.patch"
},
{
"name": "RHSA-2016:1140",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2016:1140"
},
{
"name": "openSUSE-SU-2016:2081",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html"
},
{
"name": "RHSA-2016:1139",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2016:1139"
},
{
"name": "SUSE-SU-2016:2089",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html"
},
{
"name": "1035768",
"refsource": "SECTRACK",
"url": "http://www.securitytracker.com/id/1035768"
},
{
"name": "DSA-3625",
"refsource": "DEBIAN",
"url": "http://www.debian.org/security/2016/dsa-3625"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2016-4553",
"datePublished": "2016-05-10T19:00:00.000Z",
"dateReserved": "2016-05-06T00:00:00.000Z",
"dateUpdated": "2024-08-06T00:32:25.689Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2016-4553",
"date": "2026-08-28",
"epss": "0.78777",
"percentile": "0.99572"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2016-4553\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2016-05-10T19:59:00.137\",\"lastModified\":\"2026-05-06T22:30:45.220\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"client_side.cc in Squid before 3.5.18 and 4.x before 4.0.10 does not properly ignore the Host header when absolute-URI is provided, which allows remote attackers to conduct cache-poisoning attacks via an HTTP request.\"},{\"lang\":\"es\",\"value\":\"client_side.cc en Squid en versiones anteriores a 3.5.18 y 4.x en versiones anteriores a 4.0.10 no ignora correctamente la cabecera Host cuando se proporciona una URI absoluta, lo que permite a atacantes remotos llevar a cabo ataques de envenenamiento de cach\u00e9 a trav\u00e9s de una petici\u00f3n HTTP.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N\",\"baseScore\":8.6,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":4.0}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:P/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-345\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"B6B7CAD7-9D4E-4FDB-88E3-1E583210A01F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"B5A6F2F3-4894-4392-8296-3B8DD2679084\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E88A537F-F4D0-46B9-9E37-965233C2A355\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"3.5.17\",\"matchCriteriaId\":\"C563F5CC-F4FB-4440-981E-EA2C003A639C\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:4.0.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"060FCBEA-DEAA-42FB-88C9-4B78136B172F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:4.0.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"74987102-8CA8-4120-B686-F18579A96A46\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:4.0.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DA7828AA-48B6-44CD-8507-345A4F0A25BC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:4.0.4:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6640F25F-CC8B-4B05-A97A-2186BD0B5ED8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:4.0.5:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A037F780-6FC9-4130-908F-B5434FA0C7DE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:4.0.6:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1DDEB455-F082-44E4-8CEA-019C0084BF05\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:4.0.7:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"49555803-288E-4B0A-B12A-890E5E0AD05F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:4.0.8:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"EBEE374C-365E-49DE-A9F9-6083044C774D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:4.0.9:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1B6B2A8E-DD81-43CD-9F5B-E8F87498E513\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"104DA87B-DEE4-4262-AE50-8E6BC43B228B\"}]}]}],\"references\":[{\"url\":\"http://bugs.squid-cache.org/show_bug.cgi?id=4501\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.debian.org/security/2016/dsa-3625\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://www.securitytracker.com/id/1035768\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://www.squid-cache.org/Advisories/SQUID-2016_7.txt\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14039.patch\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.ubuntu.com/usn/USN-2995-1\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2016:1139\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2016:1140\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://security.gentoo.org/glsa/201607-01\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://bugs.squid-cache.org/show_bug.cgi?id=4501\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.debian.org/security/2016/dsa-3625\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://www.securitytracker.com/id/1035768\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://www.squid-cache.org/Advisories/SQUID-2016_7.txt\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14039.patch\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.ubuntu.com/usn/USN-2995-1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2016:1139\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2016:1140\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.gentoo.org/glsa/201607-01\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T12:05:13+00:00",
"cve": "CVE-2016-4553",
"id": "CVE-2016-4553",
"initial_release_date": "2016-05-06T00:00:00+00:00",
"product_status:fixed": "70",
"product_status:known_not_affected": "3",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "squid: Cache poisoning issue in HTTP Request handling",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-4553.json",
"version": "3"
}
}
}
Loading…
Loading…
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.
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.
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.
Loading…
Loading…