CVE-2007-4321

fail2ban 0.8 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 client protocol version identification containing an IP address string, a different vector than CVE-2006-6302.

CVSS v2.0 6.8 MEDIUM

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://www.ossec.net/en/attacking-loganalysis.html
http://security.gentoo.org/glsa/glsa-200707-13.xml
http://www.debian.org/security/2008/dsa-1456
http://bugs.gentoo.org/show_bug.cgi?id=181214
http://www.securityfocus.com/bid/25117
http://secunia.com/advisories/23237
http://secunia.com/advisories/28374
http://osvdb.org/42484

Advertisement

Configurations

Configuration 1 (hide)

cpe:2.3:a:fail2ban:fail2ban:0.8:*:*:*:*:*:*:*

Information

Published : 2007-08-13 17:17

Updated : 2012-10-30 19:41

NVD link : CVE-2007-4321

Mitre link : CVE-2007-4321

JSON object : View

CWE

NVD-CWE-Other

Advertisement

Products Affected

fail2ban

fail2ban

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "http://www.ossec.net/en/attacking-loganalysis.html", "name": "http://www.ossec.net/en/attacking-loganalysis.html", "tags": [], "refsource": "MISC"}, {"url": "http://security.gentoo.org/glsa/glsa-200707-13.xml", "name": "GLSA-200707-13", "tags": [], "refsource": "GENTOO"}, {"url": "http://www.debian.org/security/2008/dsa-1456", "name": "DSA-1456", "tags": [], "refsource": "DEBIAN"}, {"url": "http://bugs.gentoo.org/show_bug.cgi?id=181214", "name": "http://bugs.gentoo.org/show_bug.cgi?id=181214", "tags": [], "refsource": "MISC"}, {"url": "http://www.securityfocus.com/bid/25117", "name": "25117", "tags": [], "refsource": "BID"}, {"url": "http://secunia.com/advisories/23237", "name": "23237", "tags": [], "refsource": "SECUNIA"}, {"url": "http://secunia.com/advisories/28374", "name": "28374", "tags": [], "refsource": "SECUNIA"}, {"url": "http://osvdb.org/42484", "name": "42484", "tags": [], "refsource": "OSVDB"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "fail2ban 0.8 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 client protocol version identification containing an IP address string, a different vector than CVE-2006-6302."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2007-4321", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}}, "publishedDate": "2007-08-14T00:17Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:fail2ban:fail2ban:0.8:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2012-10-31T02:41Z"}