ID de Prueba:	1.3.6.1.4.1.25623.1.0.51533
Categoría:	Conectiva Local Security Checks
Título:	Conectiva Security Advisory CLA-2002:523
Resumen:	NOSUMMARY
Descripción:	Description: The remote host is missing updates announced in advisory CLA-2002:523. The util-linux package contains a large variety of system utilities that are necessary for a Linux system to function. Among many features, it includes the chfn utility, a suid root tool used to change user account information. Michal Zalewski found a race condition vulnerability[1] in the way chfn locks files when changing /etc/passwd. In order to sucessfully exploit this vulnerability, some administrator interaction is needed and there are some prerequisites to fulfill. Full details can be found in the Bindview advisory[2]. Having what appears to be a stale /etc/ptmptmp file could be a sign that the vulnerability is being exploited. In that case, the administrator should investigate current users and processes before attemtping to remove this file. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2002-0638 to this issue[3]. Please note that the fixed packages were available in our ftp servers since September 2nd, 2002. Solution: The apt tool can be used to perform RPM package upgrades by running 'apt-get update' followed by 'apt-get upgrade' http://www.kb.cert.org/vuls/id/405955 http://razor.bindview.com/publish/advisories/adv_chfn.html http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0638 http://distro.conectiva.com.br/bugzilla/show_bug.cgi?id=6401 http://www.securityspace.com/smysecure/catid.html?in=CLA-2002:523 http://distro.conectiva.com.br/atualizacoes/index.php?id=a&anuncio=002002 Risk factor : High CVSS Score: 6.2
Referencia Cruzada:	BugTraq ID: 5344 Common Vulnerability Exposure (CVE) ID: CVE-2002-0638 http://www.securityfocus.com/bid/5344 Bugtraq: 20020729 RAZOR advisory: Linux util-linux chfn local root vulnerability (Google Search) http://marc.info/?l=bugtraq&m=102795787713996&w=2 Bugtraq: 20020730 TSLSA-2002-0064 - util-linux (Google Search) http://archives.neohapsis.com/archives/bugtraq/2002-07/0396.html Caldera Security Advisory: CSSA-2002-043.0 ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-043.0.txt CERT/CC vulnerability note: VU#405955 http://www.kb.cert.org/vuls/id/405955 Conectiva Linux advisory: CLA-2002:523 http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000523 HPdes Security Advisory: HPSBTL0207-054 http://online.securityfocus.com/advisories/4320 http://www.linux-mandrake.com/en/security/2002/MDKSA-2002-047.php http://www.osvdb.org/5164 RedHat Security Advisories: RHSA-2002:132 http://rhn.redhat.com/errata/RHSA-2002-132.html http://www.redhat.com/support/errata/RHSA-2002-137.html http://archives.neohapsis.com/archives/bugtraq/2002-07/0357.html http://www.iss.net/security_center/static/9709.php
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