CVE-2009-5023 (GCVE-0-2009-5023)
Vulnerability from cvelistv5 – Published: 2014-06-10 14:00 – Updated: 2024-08-07 07:24
VLAI
EPSS
VEX
Summary
The (1) dshield.conf, (2) mail-buffered.conf, (3) mynetwatchman.conf, and (4) mynetwatchman.conf actions in action.d/ in Fail2ban before 0.8.5 allows local users to write to arbitrary files via a symlink attack on temporary files with predictable names, as demonstrated by /tmp/fail2ban-mail.txt.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/fail2ban/fail2ban/blob/sdist/0… | x_refsource_CONFIRM |
| http://security.gentoo.org/glsa/glsa-201406-03.xml | vendor-advisoryx_refsource_GENTOO |
| https://bugs.debian.org/cgi-bin/bugreport.cgi?bug… | x_refsource_CONFIRM |
| http://secunia.com/advisories/58841 | third-party-advisoryx_refsource_SECUNIA |
Date Public
2009-08-29 00:00
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"value": "The (1) dshield.conf, (2) mail-buffered.conf, (3) mynetwatchman.conf, and (4) mynetwatchman.conf actions in action.d/ in Fail2ban before 0.8.5 allows local users to write to arbitrary files via a symlink attack on temporary files with predictable names, as demonstrated by /tmp/fail2ban-mail.txt."
},
{
"lang": "es",
"value": "Las acciones1) dshield.conf, (2) mail-buffered.conf, (3) mynetwatchman.conf y (4) mynetwatchman.conf en action.d/ en Fail2ban anterior a 0.8.5 permiten a usuarios locales escribir archivos arbitrarios a trav\u00e9s de un ataque de enlace simb\u00f3lico sobre archivos temporales con nombres previsibles, tal y como fue demostrado por /tmp/fail2ban-mail.txt."
}
],
"id": "CVE-2009-5023",
"lastModified": "2026-05-06T22:30:45.220",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.7,
"confidentialityImpact": "NONE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:L/AC:M/Au:N/C:N/I:C/A:N",
"version": "2.0"
},
"exploitabilityScore": 3.4,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2014-06-10T14:55:08.757",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://secunia.com/advisories/58841"
},
{
"source": "secalert@redhat.com",
"url": "http://security.gentoo.org/glsa/glsa-201406-03.xml"
},
{
"source": "secalert@redhat.com",
"url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=544232"
},
{
"source": "secalert@redhat.com",
"url": "https://github.com/fail2ban/fail2ban/blob/sdist/0.8.5/ChangeLog"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/58841"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://security.gentoo.org/glsa/glsa-201406-03.xml"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=544232"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/fail2ban/fail2ban/blob/sdist/0.8.5/ChangeLog"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-59"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2025-11-21T12:31:50+00:00",
"cve": "CVE-2009-5023",
"id": "CVE-2009-5023",
"initial_release_date": "2009-08-29T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "fail2ban: Use of insecure default temporary file when unbanning an IP",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2009/cve-2009-5023.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2025-07-03T00:31:29Z",
"cve": "CVE-2009-5023",
"id": "CVE-2009-5023",
"initial_release_date": "2023-02-15T06:01:15Z",
"product_status:recommended": "3",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2009-5023",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2009-5023.json",
"version": "7"
}
}
}
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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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