CVE-2011-1947 (GCVE-0-2011-1947)
Vulnerability from cvelistv5 – Published: 2011-06-02 19:00 – Updated: 2024-08-06 22:46
VLAI
EPSS
VEX
Summary
fetchmail 5.9.9 through 6.3.19 does not properly limit the wait time after issuing a (1) STARTTLS or (2) STLS request, which allows remote servers to cause a denial of service (application hang) by acknowledging the request but not sending additional packets.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
14 references
Date Public
2011-05-30 00:00
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},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2011-06-02T19:55:03.903",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://gitorious.org/fetchmail/fetchmail/blobs/legacy_63/fetchmail-SA-2011-01.txt"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061634.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061672.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061735.html"
},
{
"source": "secalert@redhat.com",
"url": "http://openwall.com/lists/oss-security/2011/05/30/1"
},
{
"source": "secalert@redhat.com",
"url": "http://openwall.com/lists/oss-security/2011/05/31/12"
},
{
"source": "secalert@redhat.com",
"url": "http://openwall.com/lists/oss-security/2011/05/31/17"
},
{
"source": "secalert@redhat.com",
"url": "http://openwall.com/lists/oss-security/2011/06/01/2"
},
{
"source": "secalert@redhat.com",
"url": "http://www.fetchmail.info/fetchmail-SA-2011-01.txt"
},
{
"source": "secalert@redhat.com",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2011:107"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securityfocus.com/archive/1/518251/100/0/threaded"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securityfocus.com/bid/48043"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securitytracker.com/id?1025605"
},
{
"source": "secalert@redhat.com",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/67700"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://gitorious.org/fetchmail/fetchmail/blobs/legacy_63/fetchmail-SA-2011-01.txt"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061634.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061672.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061735.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://openwall.com/lists/oss-security/2011/05/30/1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://openwall.com/lists/oss-security/2011/05/31/12"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://openwall.com/lists/oss-security/2011/05/31/17"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://openwall.com/lists/oss-security/2011/06/01/2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.fetchmail.info/fetchmail-SA-2011-01.txt"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2011:107"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/archive/1/518251/100/0/threaded"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/48043"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securitytracker.com/id?1025605"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/67700"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-399"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2025-11-21T12:57:39+00:00",
"cve": "CVE-2011-1947",
"id": "CVE-2011-1947",
"initial_release_date": "2011-05-30T00:00:00+00:00",
"product_status:known_affected": "3",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "fetchmail: Application hang due unguarded blocking I/O in IMAP/POP3 STARTTLS initialization (fetchmail-SA-2011-01)",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-1947.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-15T00:34:40Z",
"cve": "CVE-2011-1947",
"id": "CVE-2011-1947",
"initial_release_date": "2023-02-15T05:53:08Z",
"product_status:recommended": "91",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2011-1947",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2011-1947.json",
"version": "9"
}
}
}
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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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