ID de Prueba:	1.3.6.1.4.1.25623.1.0.61404
Categoría:	Red Hat Local Security Checks
Título:	RedHat Security Advisory RHSA-2008:0855
Resumen:	NOSUMMARY
Descripción:	Description: The remote host is missing updates announced in advisory RHSA-2008:0855. OpenSSH is OpenBSD's SSH (Secure SHell) protocol implementation. Last week Red Hat detected an intrusion on certain of its computer systems and took immediate action. While the investigation into the intrusion is on-going, our initial focus was to review and test the distribution channel we use with our customers, Red Hat Network (RHN) and its associated security measures. Based on these efforts, we remain highly confident that our systems and processes prevented the intrusion from compromising RHN or the content distributed via RHN and accordingly believe that customers who keep their systems updated using Red Hat Network are not at risk. We are issuing this alert primarily for those who may obtain Red Hat binary packages via channels other than those of official Red Hat subscribers. In connection with the incident, the intruder was able to sign a small number of OpenSSH packages relating only to Red Hat Enterprise Linux 4 (i386 and x86_64 architectures only) and Red Hat Enterprise Linux 5 (x86_64 architecture only). As a precautionary measure, we are releasing an updated version of these packages, and have published a list of the tampered packages and how to detect them at http://www.redhat.com/security/data/openssh-blacklist.html To reiterate, our processes and efforts to date indicate that packages obtained by Red Hat Enterprise Linux subscribers via Red Hat Network are not at risk. These packages also fix a low severity flaw in the way ssh handles X11 cookies when creating X11 forwarding connections. When ssh was unable to create untrusted cookie, ssh used a trusted cookie instead, possibly allowing the administrative user of a untrusted remote server, or untrusted application run on the remote server, to gain unintended access to a users local X server. (CVE-2007-4752) 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-2008-0855.html http://www.redhat.com/security/data/openssh-blacklist.html http://www.redhat.com/security/updates/classification/#critical Risk factor : High CVSS Score: 7.5
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2007-4752 http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html BugTraq ID: 25628 http://www.securityfocus.com/bid/25628 Bugtraq: 20070917 FLEA-2007-0055-1 openssh openssh-client openssh-server gnome-ssh-askpass (Google Search) http://www.securityfocus.com/archive/1/479760/100/0/threaded Bugtraq: 20071115 Re: HPSBUX02287 SSRT071485 rev.1 - HP-UX Running HP Secure Shell, Remotely Gain Extended Privileges (Google Search) http://www.securityfocus.com/archive/1/483748/100/200/threaded Debian Security Information: DSA-1576 (Google Search) http://www.debian.org/security/2008/dsa-1576 https://www.redhat.com/archives/fedora-package-announce/2007-October/msg00214.html http://security.gentoo.org/glsa/glsa-200711-02.xml HPdes Security Advisory: HPSBUX02287 http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01271085 HPdes Security Advisory: SSRT071485 http://www.mandriva.com/security/advisories?name=MDKSA-2007:236 https://bugzilla.redhat.com/show_bug.cgi?id=280471 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10809 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5599 http://www.redhat.com/support/errata/RHSA-2008-0855.html http://secunia.com/advisories/27399 http://secunia.com/advisories/29420 http://secunia.com/advisories/30249 http://secunia.com/advisories/31575 http://secunia.com/advisories/32241 http://securityreason.com/securityalert/3126 SuSE Security Announcement: SUSE-SR:2007:022 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2007-10/msg00008.html http://www.ubuntu.com/usn/usn-566-1 http://www.vupen.com/english/advisories/2007/3156 http://www.vupen.com/english/advisories/2008/0924/references http://www.vupen.com/english/advisories/2008/2821 XForce ISS Database: openssh-x11cookie-privilege-escalation(36637) https://exchange.xforce.ibmcloud.com/vulnerabilities/36637
Copyright	Copyright (c) 2008 E-Soft Inc. http://www.securityspace.com

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