CVE-2011-1575 (GCVE-0-2011-1575)
Vulnerability from cvelistv5 – Published: 2011-05-23 22:00 – Updated: 2024-08-06 22:28
VLAI
EPSS
VEX
Summary
The STARTTLS implementation in ftp_parser.c in Pure-FTPd before 1.0.30 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted FTP sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
14 references
Date Public
2011-03-08 00:00
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"descriptions": [
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"lang": "en",
"value": "The STARTTLS implementation in ftp_parser.c in Pure-FTPd before 1.0.30 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted FTP sessions by sending a cleartext command that is processed after TLS is in place, related to a \"plaintext command injection\" attack, a similar issue to CVE-2011-0411."
},
{
"lang": "es",
"value": "La implementaci\u00f3n de STARTTLS en ftp_parser.c de Pure-FTPd en versiones anteriores a 1.0.30\r\nno restringe correctamente el buffer de entrada/salida, que permite a los atacantes a realizar \"man-in-the-middle\" para insertar comandos en las sesiones FTP cifradas mediante el env\u00edo de un comando en claro que se procesa despu\u00e9s de TLS est\u00e9 funcionando, se relaciona con una \"inyecci\u00f3n de comandos de texto claro\" es un problema similar a CVE-2011-0411."
}
],
"id": "CVE-2011-1575",
"lastModified": "2024-11-21T01:26:38.077",
"metrics": {
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"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
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"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 4.9,
"obtainAllPrivilege": false,
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"source": "nvd@nist.gov",
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"negate": false,
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]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The STARTTLS implementation in ftp_parser.c in Pure-FTPd before 1.0.30 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted FTP sessions by sending a cleartext command that is processed after TLS is in place, related to a \"plaintext command injection\" attack, a similar issue to CVE-2011-0411."
},
{
"lang": "es",
"value": "La implementaci\u00f3n de STARTTLS en ftp_parser.c de Pure-FTPd en versiones anteriores a 1.0.30\r\nno restringe correctamente el buffer de entrada/salida, que permite a los atacantes a realizar \"man-in-the-middle\" para insertar comandos en las sesiones FTP cifradas mediante el env\u00edo de un comando en claro que se procesa despu\u00e9s de TLS est\u00e9 funcionando, se relaciona con una \"inyecci\u00f3n de comandos de texto claro\" es un problema similar a CVE-2011-0411."
}
],
"id": "CVE-2011-1575",
"lastModified": "2026-04-29T01:13:23.040",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2011-05-23T22:55:01.207",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://archives.pureftpd.org/archives.cgi?100:mss:3906:201103:cpeojfkblajnpinkeadd"
},
{
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],
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},
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html"
},
{
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"url": "http://lists.opensuse.org/opensuse-updates/2011-05/msg00029.html"
},
{
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"url": "http://openwall.com/lists/oss-security/2011/04/11/14"
},
{
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"url": "http://openwall.com/lists/oss-security/2011/04/11/3"
},
{
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"url": "http://openwall.com/lists/oss-security/2011/04/11/7"
},
{
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},
{
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"tags": [
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],
"url": "http://secunia.com/advisories/43988"
},
{
"source": "secalert@redhat.com",
"url": "http://secunia.com/advisories/44548"
},
{
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"url": "http://www.pureftpd.org/project/pure-ftpd/news"
},
{
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},
{
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},
{
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://openwall.com/lists/oss-security/2011/04/11/14"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://openwall.com/lists/oss-security/2011/04/11/3"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://openwall.com/lists/oss-security/2011/04/11/7"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://openwall.com/lists/oss-security/2011/04/11/8"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/43988"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/44548"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.pureftpd.org/project/pure-ftpd/news"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://bugzilla.novell.com/show_bug.cgi?id=686590"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=683221"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://github.com/jedisct1/pure-ftpd/commit/65c4d4ad331e94661de763e9b5304d28698999c4"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-399"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2025-11-21T12:57:48+00:00",
"cve": "CVE-2011-1575",
"id": "CVE-2011-1575",
"initial_release_date": "2011-03-05T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "pure-ftpd: command injection during plaintext to TLS session switch",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-1575.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2025-04-25T13:52:08Z",
"cve": "CVE-2011-1575",
"id": "CVE-2011-1575",
"initial_release_date": "2023-02-15T05:53:33Z",
"product_status:recommended": "1",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2011-1575",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2011-1575.json",
"version": "8"
}
}
}
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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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