CVE-2006-6302 - Vulnerability Details - OpenCVE

fail2ban 0.7.4 and earlier does not properly parse sshd log files, which allows remote attackers to add arbitrary hosts to the /etc/hosts.deny file and cause a denial of service by adding arbitrary IP addresses to the sshd log file, as demonstrated by logging in via ssh with a login name containing certain strings with an IP address.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Fail2ban	Fail2ban

Configuration 1 [-]

cpe:2.3:a:fail2ban:fail2ban:*:*:*:*:*:*:*:*

No data.

References

Link	Providers
http://bugs.gentoo.org/show_bug.cgi?id=157166
http://secunia.com/advisories/23237
http://secunia.com/advisories/24184
http://security.gentoo.org/glsa/glsa-200702-05.xml
http://www.securityfocus.com/bid/21469
http://www.vupen.com/english/advisories/2006/4877
https://exchange.xforce.ibmcloud.com/vulnerabilities/30739

History

No history.

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2006-12-06T19:00:00

Updated: 2024-08-07T20:19:35.257Z

Reserved: 2006-12-05T00:00:00

Link: CVE-2006-6302

Vulnrichment

No data.

NVD

Status : Deferred

Published: 2006-12-06T19:28:00.000

Modified: 2025-04-09T00:30:58.490

Link: CVE-2006-6302

Redhat

No data.

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2006-12-04T00:00:00", "descriptions": [{"lang": "en", "value": "fail2ban 0.7.4 and earlier does not properly parse sshd log files, which allows remote attackers to add arbitrary hosts to the /etc/hosts.deny file and cause a denial of service by adding arbitrary IP addresses to the sshd log file, as demonstrated by logging in via ssh with a login name containing certain strings with an IP address."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2017-07-28T12:57:01", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"name": "GLSA-200702-05", "tags": ["vendor-advisory", "x_refsource_GENTOO"], "url": "http://security.gentoo.org/glsa/glsa-200702-05.xml"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://bugs.gentoo.org/show_bug.cgi?id=157166"}, {"name": "23237", "tags": ["third-party-advisory", "x_refsource_SECUNIA"], "url": "http://secunia.com/advisories/23237"}, {"name": "24184", "tags": ["third-party-advisory", "x_refsource_SECUNIA"], "url": "http://secunia.com/advisories/24184"}, {"name": "fail2ban-log-message-dos(30739)", "tags": ["vdb-entry", "x_refsource_XF"], "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/30739"}, {"name": "21469", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/21469"}, {"name": "ADV-2006-4877", "tags": ["vdb-entry", "x_refsource_VUPEN"], "url": "http://www.vupen.com/english/advisories/2006/4877"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2006-6302", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "fail2ban 0.7.4 and earlier does not properly parse sshd log files, which allows remote attackers to add arbitrary hosts to the /etc/hosts.deny file and cause a denial of service by adding arbitrary IP addresses to the sshd log file, as demonstrated by logging in via ssh with a login name containing certain strings with an IP address."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "GLSA-200702-05", "refsource": "GENTOO", "url": "http://security.gentoo.org/glsa/glsa-200702-05.xml"}, {"name": "http://bugs.gentoo.org/show_bug.cgi?id=157166", "refsource": "CONFIRM", "url": "http://bugs.gentoo.org/show_bug.cgi?id=157166"}, {"name": "23237", "refsource": "SECUNIA", "url": "http://secunia.com/advisories/23237"}, {"name": "24184", "refsource": "SECUNIA", "url": "http://secunia.com/advisories/24184"}, {"name": "fail2ban-log-message-dos(30739)", "refsource": "XF", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/30739"}, {"name": "21469", "refsource": "BID", "url": "http://www.securityfocus.com/bid/21469"}, {"name": "ADV-2006-4877", "refsource": "VUPEN", "url": "http://www.vupen.com/english/advisories/2006/4877"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-07T20:19:35.257Z"}, "title": "CVE Program Container", "references": [{"name": "GLSA-200702-05", "tags": ["vendor-advisory", "x_refsource_GENTOO", "x_transferred"], "url": "http://security.gentoo.org/glsa/glsa-200702-05.xml"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://bugs.gentoo.org/show_bug.cgi?id=157166"}, {"name": "23237", "tags": ["third-party-advisory", "x_refsource_SECUNIA", "x_transferred"], "url": "http://secunia.com/advisories/23237"}, {"name": "24184", "tags": ["third-party-advisory", "x_refsource_SECUNIA", "x_transferred"], "url": "http://secunia.com/advisories/24184"}, {"name": "fail2ban-log-message-dos(30739)", "tags": ["vdb-entry", "x_refsource_XF", "x_transferred"], "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/30739"}, {"name": "21469", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/21469"}, {"name": "ADV-2006-4877", "tags": ["vdb-entry", "x_refsource_VUPEN", "x_transferred"], "url": "http://www.vupen.com/english/advisories/2006/4877"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2006-6302", "datePublished": "2006-12-06T19:00:00", "dateReserved": "2006-12-05T00:00:00", "dateUpdated": "2024-08-07T20:19:35.257Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:fail2ban:fail2ban:*:*:*:*:*:*:*:*", "matchCriteriaId": "8B6A500D-6B1A-44B7-879B-EB83141C2E7B", "versionEndIncluding": "0.7.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "fail2ban 0.7.4 and earlier does not properly parse sshd log files, which allows remote attackers to add arbitrary hosts to the /etc/hosts.deny file and cause a denial of service by adding arbitrary IP addresses to the sshd log file, as demonstrated by logging in via ssh with a login name containing certain strings with an IP address."}, {"lang": "es", "value": "fail2ban 0.7.4 y anteriores no realizan de forma adecuada una an\u00e1lisis sint\u00e1ctico de los ficheros de log de sshd, lo cual permite a atacantes remotos a\u00f1adir hosts de su elecci\u00f3n en el fichero /etc/hosts.deny y provocar una denegaci\u00f3n de servicio a\u00f1adiendo direcciones IP de su elecci\u00f3n al fichero de log de sshd, como ha sido demostrado accediendo por ssh utilizando un nombre de acceso que contiene ciertas cadenas con una direcci\u00f3n IP."}], "id": "CVE-2006-6302", "lastModified": "2025-04-09T00:30:58.490", "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": "2006-12-06T19:28:00.000", "references": [{"source": "cve@mitre.org", "url": "http://bugs.gentoo.org/show_bug.cgi?id=157166"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/23237"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/24184"}, {"source": "cve@mitre.org", "url": "http://security.gentoo.org/glsa/glsa-200702-05.xml"}, {"source": "cve@mitre.org", "url": "http://www.securityfocus.com/bid/21469"}, {"source": "cve@mitre.org", "url": "http://www.vupen.com/english/advisories/2006/4877"}, {"source": "cve@mitre.org", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/30739"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://bugs.gentoo.org/show_bug.cgi?id=157166"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/23237"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/24184"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://security.gentoo.org/glsa/glsa-200702-05.xml"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/21469"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.vupen.com/english/advisories/2006/4877"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/30739"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}