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Red Hat alert RHSA-2012:0308-03 (busybox)

From:  bugzilla@redhat.com
To:  rhsa-announce@redhat.com, enterprise-watch-list@redhat.com
Subject:  [RHSA-2012:0308-03] Low: busybox security and bug fix update
Date:  Tue, 21 Feb 2012 04:53:04 +0000
Message-ID:  <201202210453.q1L4r543009265@int-mx01.intmail.prod.int.phx2.redhat.com>
Archive-link:  Article, Thread

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Low: busybox security and bug fix update Advisory ID: RHSA-2012:0308-03 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0308.html Issue date: 2012-02-21 CVE Names: CVE-2006-1168 CVE-2011-2716 ===================================================================== 1. Summary: Updated busybox packages that fix two security issues and two bugs are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having low security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 3. Description: BusyBox provides a single binary that includes versions of a large number of system commands, including a shell. This can be very useful for recovering from certain types of system failures, particularly those involving broken shared libraries. A buffer underflow flaw was found in the way the uncompress utility of BusyBox expanded certain archive files compressed using Lempel-Ziv compression. If a user were tricked into expanding a specially-crafted archive file with uncompress, it could cause BusyBox to crash or, potentially, execute arbitrary code with the privileges of the user running BusyBox. (CVE-2006-1168) The BusyBox DHCP client, udhcpc, did not sufficiently sanitize certain options provided in DHCP server replies, such as the client hostname. A malicious DHCP server could send such an option with a specially-crafted value to a DHCP client. If this option's value was saved on the client system, and then later insecurely evaluated by a process that assumes the option is trusted, it could lead to arbitrary code execution with the privileges of that process. Note: udhcpc is not used on Red Hat Enterprise Linux by default, and no DHCP client script is provided with the busybox packages. (CVE-2011-2716) This update also fixes the following bugs: * Prior to this update, the cp command wrongly returned the exit code 0 to indicate success if a device ran out of space while attempting to copy files of more than 4 gigabytes. This update modifies BusyBox, so that in such situations, the exit code 1 is returned. Now, the cp command shows correctly whether a process failed. (BZ#689659) * Prior to this update, the findfs command failed to check all existing block devices on a system with thousands of block device nodes in "/dev/". This update modifies BusyBox so that findfs checks all block devices even in this case. (BZ#756723) All users of busybox are advised to upgrade to these updated packages, which correct these issues. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 201919 - CVE-2006-1168 ncompress: .bss buffer underflow in decompression 689659 - "busybox cp" does not return a correct exit code when "No space left on device" 725364 - CVE-2011-2716 busybox: udhcpc insufficient checking of DHCP options 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/... i386: busybox-1.2.0-13.el5.i386.rpm busybox-anaconda-1.2.0-13.el5.i386.rpm x86_64: busybox-1.2.0-13.el5.x86_64.rpm busybox-anaconda-1.2.0-13.el5.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/... i386: busybox-1.2.0-13.el5.i386.rpm busybox-anaconda-1.2.0-13.el5.i386.rpm ia64: busybox-1.2.0-13.el5.ia64.rpm busybox-anaconda-1.2.0-13.el5.ia64.rpm ppc: busybox-1.2.0-13.el5.ppc.rpm busybox-anaconda-1.2.0-13.el5.ppc.rpm s390x: busybox-1.2.0-13.el5.s390x.rpm busybox-anaconda-1.2.0-13.el5.s390x.rpm x86_64: busybox-1.2.0-13.el5.x86_64.rpm busybox-anaconda-1.2.0-13.el5.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2006-1168.html https://www.redhat.com/security/data/cve/CVE-2011-2716.html https://access.redhat.com/security/updates/classification... 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2012 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFPQyMjXlSAg2UNWIIRAtsmAKCHQFq9zIBT1ytvuju+KpmtBHW4/gCeNg/5 E12Zm9ZS69gQP9qN8MdudeU= =DWg5 -----END PGP SIGNATURE----- -- Enterprise-watch-list mailing list Enterprise-watch-list@redhat.com https://www.redhat.com/mailman/listinfo/enterprise-watch-...


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