FKIE_CVE-2009-2855
Vulnerability from fkie_nvd - Published: 2009-08-18 21:00 - Updated: 2026-06-16 23:10
Severity
Summary
The strListGetItem function in src/HttpHeaderTools.c in Squid 2.7 allows remote attackers to cause a denial of service via a crafted auth header with certain comma delimiters that trigger an infinite loop of calls to the strcspn function.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| squid-cache | squid | 2.7 | |
| squid-cache | squid | 2.7 | |
| squid-cache | squid | 2.7 |
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cve@mitre.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:squid-cache:squid:2.7:*:*:*:*:*:*:*",
"matchCriteriaId": "35C30CB9-FA3A-408D-A8B0-8805E75657BE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable3:*:*:*:*:*:*",
"matchCriteriaId": "A03692DD-779F-4E3C-861C-29943870A816",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable4:*:*:*:*:*:*",
"matchCriteriaId": "79FF6B3C-A3CE-4AA2-80F9-44D05A6B2F08",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The strListGetItem function in src/HttpHeaderTools.c in Squid 2.7 allows remote attackers to cause a denial of service via a crafted auth header with certain comma delimiters that trigger an infinite loop of calls to the strcspn function."
},
{
"lang": "es",
"value": "La funci\u00f3n strListGetItem en src/HttpHeaderTools.c en Squid v2.7 a permite a los atacantes remotos causar una denegaci\u00f3n de servicio a trav\u00e9s de una cabecera auth manipulada con ciertos delimitadores coma que lanzan un bucle infinito de llamadas a la funci\u00f3n strcspn."
}
],
"id": "CVE-2009-2855",
"lastModified": "2026-06-16T23:10:22.010",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2009-08-18T21:00:00.640",
"references": [
{
"source": "cve@mitre.org",
"url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534982"
},
{
"source": "cve@mitre.org",
"url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=31%3Bfilename=diff%3Batt=1%3Bbug=534982"
},
{
"source": "cve@mitre.org",
"url": "http://www.openwall.com/lists/oss-security/2009/07/20/10"
},
{
"source": "cve@mitre.org",
"url": "http://www.openwall.com/lists/oss-security/2009/08/03/3"
},
{
"source": "cve@mitre.org",
"url": "http://www.openwall.com/lists/oss-security/2009/08/04/6"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/bid/36091"
},
{
"source": "cve@mitre.org",
"url": "http://www.securitytracker.com/id?1022757"
},
{
"source": "cve@mitre.org",
"url": "http://www.squid-cache.org/bugs/show_bug.cgi?id=2541"
},
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "http://www.squid-cache.org/bugs/show_bug.cgi?id=2704"
},
{
"source": "cve@mitre.org",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=518182"
},
{
"source": "cve@mitre.org",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/52610"
},
{
"source": "cve@mitre.org",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10592"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534982"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=31%3Bfilename=diff%3Batt=1%3Bbug=534982"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2009/07/20/10"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2009/08/03/3"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2009/08/04/6"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/36091"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securitytracker.com/id?1022757"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.squid-cache.org/bugs/show_bug.cgi?id=2541"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://www.squid-cache.org/bugs/show_bug.cgi?id=2704"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=518182"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/52610"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10592"
}
],
"sourceIdentifier": "cve@mitre.org",
"vendorComments": [
{
"comment": "This issue did not affect the versions of the squid packages, as shipped with Red Hat Enterprise Linux 3 and 4.\n\nThe issue was addressed in the squid packages as shipped with Red Hat Enterprise Linux 5 via:\nhttps://rhn.redhat.com/errata/RHSA-2010-0221.html\n",
"lastModified": "2010-03-31T00:00:00",
"organization": "Red Hat"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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