PT-2006-6929 · Fail2Ban · Fail2Ban

Tavis Ormandy · Published 2006-12-06 · Updated 2017-07-29 · CVE-2006-6302

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions fail2ban versions 0.7.4 and earlier

Description The issue allows remote attackers to cause a denial of service by adding arbitrary IP addresses to the sshd log file. This can be achieved by logging in via ssh with a login name containing certain strings with an IP address, which are not properly parsed from sshd log files.

Recommendations For versions 0.7.4 and earlier, consider updating to a newer version that properly parses sshd log files to prevent arbitrary hosts from being added to the /etc/hosts.deny file. As a temporary workaround, consider restricting access to the sshd log file to minimize the risk of exploitation.

Fix

Related Identifiers

CVE-2006-6302

Affected Products

Fail2Ban

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2006-6302 · Security Note
• http://secunia.com/advisories/23237 · Vendor Advisory
• http://secunia.com/advisories/24184 · Vendor Advisory
• http://security.gentoo.org/glsa/glsa-200702-05.xml · Vendor Advisory
• http://vupen.com/english/advisories/2006/4877 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/30739 · Note
• http://securityfocus.com/bid/21469 · Note
• http://bugs.gentoo.org/show_bug.cgi?id=157166 · Note