ID de Prueba:	1.3.6.1.4.1.25623.1.0.61301
Categoría:	Red Hat Local Security Checks
Título:	RedHat Security Advisory RHSA-2008:0680
Resumen:	NOSUMMARY
Descripción:	Description: The remote host is missing updates announced in advisory RHSA-2008:0680. vsftpd (Very Secure File Transfer Protocol (FTP) daemon) is a secure FTP server for Linux and Unix-like systems. The version of vsftpd as shipped in Red Hat Enterprise Linux 4 when used in combination with Pluggable Authentication Modules (PAM) had a memory leak on an invalid authentication attempt. Since vsftpd prior to version 2.0.5 allows any number of invalid attempts on the same connection this memory leak could lead to an eventual DoS. (CVE-2008-2375) This update mitigates this security issue by including a backported patch which terminates a session after a given number of failed log in attempts. The default number of attempts is 3 and this can be configured using the max_login_fails directive. This package also addresses the following bugs: * when uploading unique files, a bug in vsftpd caused the file to be saved with a suffix '.1' even when no previous file with that name existed. This issues is resolved in this package. * when vsftpd was run through the init script, it was possible for the init script to print an 'OK' message, even though the vsftpd may not have started. The init script no longer produces a false verification with this update. * vsftpd only supported usernames with a maximum length of 32 characters. The updated package now supports usernames up to 128 characters long. * a system flaw meant vsftpd output could become dependent on the timing or sequence of other events, even when the lock_upload_files option was set. If a file, filename.ext, was being uploaded and a second transfer of the file, filename.ext, was started before the first transfer was finished, the resultant uploaded file was a corrupt concatenation of the latter upload and the tail of the earlier upload. With this updated package, vsftpd allows the earlier upload to complete before overwriting with the latter upload, fixing the issue. * the 'lock_upload_files' option was not documented in the manual page. A new manual page describing this option is included in this package. * vsftpd did not support usernames that started with an underscore or a period character. These special characters are now allowed at the beginning of a username. * when storing a unique file, vsftpd could cause an error for some clients. This is rectified in this package. * vsftpd init script was found to not be Linux Standards Base compliant. This update corrects their exit codes to conform to the standard. All vsftpd users are advised to upgrade to this updated package, which resolves these issues. Solution: Please note that this update is available via Red Hat Network. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date http://rhn.redhat.com/errata/RHSA-2008-0680.html http://www.redhat.com/security/updates/classification/#moderate Risk factor : High CVSS Score: 7.1
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2008-2375 1020546 http://www.securitytracker.com/id?1020546 20080708 rPSA-2008-0217-1 vsftpd http://www.securityfocus.com/archive/1/494081/100/0/threaded 30364 http://www.securityfocus.com/bid/30364 31007 http://secunia.com/advisories/31007 31223 http://secunia.com/advisories/31223 32263 http://secunia.com/advisories/32263 ADV-2008-2820 http://www.vupen.com/english/advisories/2008/2820 RHSA-2008:0579 http://www.redhat.com/support/errata/RHSA-2008-0579.html RHSA-2008:0680 http://www.redhat.com/support/errata/RHSA-2008-0680.html [oss-security] 20080630 CVE-2008-2375 older vsftpd authentication memory leak http://www.openwall.com/lists/oss-security/2008/06/30/2 http://support.avaya.com/elmodocs2/security/ASA-2008-398.htm http://wiki.rpath.com/Advisories:rPSA-2008-0217 https://bugzilla.redhat.com/attachment.cgi?id=201051 https://issues.rpath.com/browse/RPL-2640 oval:org.mitre.oval:def:10138 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10138
Copyright	Copyright (c) 2008 E-Soft Inc. http://www.securityspace.com

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