FKIE_CVE-2016-4553

Vulnerability from fkie_nvd - Published: 2016-05-10 19:59 - Updated: 2026-06-17 00:47
Severity
8.6 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
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.
References
cve@mitre.orghttp://bugs.squid-cache.org/show_bug.cgi?id=4501Vendor Advisory
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html
cve@mitre.orghttp://www.debian.org/security/2016/dsa-3625
cve@mitre.orghttp://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlThird Party Advisory
cve@mitre.orghttp://www.securitytracker.com/id/1035768Third Party Advisory
cve@mitre.orghttp://www.squid-cache.org/Advisories/SQUID-2016_7.txtVendor Advisory
cve@mitre.orghttp://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14039.patch
cve@mitre.orghttp://www.ubuntu.com/usn/USN-2995-1Third Party Advisory
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2016:1139
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2016:1140
cve@mitre.orghttps://security.gentoo.org/glsa/201607-01
af854a3a-2127-422b-91ae-364da2661108http://bugs.squid-cache.org/show_bug.cgi?id=4501Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2016/dsa-3625
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1035768Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.squid-cache.org/Advisories/SQUID-2016_7.txtVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14039.patch
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2995-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2016:1139
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2016:1140
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201607-01
Impacted products
Vendor Product Version
canonical ubuntu_linux 12.04
canonical ubuntu_linux 14.04
canonical ubuntu_linux 15.10
canonical ubuntu_linux 16.04
squid-cache squid *
squid-cache squid 4.0.1
squid-cache squid 4.0.2
squid-cache squid 4.0.3
squid-cache squid 4.0.4
squid-cache squid 4.0.5
squid-cache squid 4.0.6
squid-cache squid 4.0.7
squid-cache squid 4.0.8
squid-cache squid 4.0.9
oracle linux 7
To clipboard 

{
  "affected": [
    {
      "affectedData": [
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
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  ],
  "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."
    }
  ],
  "id": "CVE-2016-4553",
  "lastModified": "2026-06-17T00:47:46.123",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2016-05-10T19:59:00.137",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://bugs.squid-cache.org/show_bug.cgi?id=4501"
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      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html"
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-345"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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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.



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.