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  • [SECURITY] [DSA 1907-1] New kvm packages fix several vulnerabilities

    From Giuseppe Iuculano@1:229/2 to All on Tue Oct 13 10:40:01 2009
    From: [email protected]

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    - ------------------------------------------------------------------------ Debian Security Advisory DSA-1907-1 [email protected] http://www.debian.org/security/ Giuseppe Iuculano
    October 13, 2009 http://www.debian.org/security/faq
    - ------------------------------------------------------------------------

    Package : kvm
    Vulnerability : several vulnerabilities
    Problem type : local (remote)
    Debian-specific: no
    Debian bugs : 509997 548975
    CVE Ids : CVE-2008-5714 CVE-2009-3290


    Several vulnerabilities have been discovered in kvm, a full virtualization system.
    The Common Vulnerabilities and Exposures project identifies the
    following problems:

    CVE-2008-5714

    Chris Webb discovered an off-by-one bug limiting KVM's VNC passwords to 7 characters. This flaw might make it easier for remote attackers to guess the VNC
    password, which is limited to seven characters where eight was intended.

    CVE-2009-3290

    It was discovered that the kvm_emulate_hypercall function in KVM does not prevent access to MMU hypercalls from ring 0, which allows local guest OS users to cause a denial of service (guest kernel crash) and read or write guest kernel
    memory.


    For the stable distribution (lenny), these problems have been fixed in version 72+dfsg-5~lenny3.

    The oldstable distribution (etch) does not contain kvm.

    For the testing distribution (squeeze) these problems will be fixed soon.

    For the unstable distribution (sid) these problems have been fixed in version 85+dfsg-4.1


    We recommend that you upgrade your kvm packages.

    Upgrade instructions
    - --------------------

    wget url
    will fetch the file for you
    dpkg -i file.deb
    will install the referenced file.

    If you are using the apt-get package manager, use the line for
    sources.list as given below:

    apt-get update
    will update the internal database
    apt-get upgrade
    will install corrected packages

    You may use an automated update by adding the resources from the
    footer to the proper configuration.


    Debian GNU/Linux 5.0 alias lenny
    - --------------------------------

    Debian (stable)
    - ---------------

    Stable updates are available for alpha, amd64, arm, armel, hppa, i386, ia64, mips, mipsel, powerpc, s390 and sparc.

    Source archives:

    http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg-5~lenny3.dsc
    Size/MD5 checksum: 1349 da207d5f42ab45ed3956be5fcb6ad685
    http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg-5~lenny3.diff.gz
    Size/MD5 checksum: 41138 f28b640e60392636399873e99b6cc5e3
    http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg.orig.tar.gz
    Size/MD5 checksum: 3250251 899a66ae2ea94e994e06f637e1afef4a

    Architecture independent packages:

    http://security.debian.org/pool/updates/main/k/kvm/kvm-source_72+dfsg-5~lenny3_all.deb
    Size/MD5 checksum: 158242 8cee5a68dadbbceecdac6330b69fa59f

    amd64 architecture (AMD x86_64 (AMD64))

    http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg-5~lenny3_amd64.deb
    Size/MD5 checksum: 1099546 5009415dc4927800b33249ca31d8a651

    i386 architecture (Intel ia32)

    http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg-5~lenny3_i386.deb
    Size/MD5 checksum: 1030530 313f1a0d91889bf167c4e1aaf57a027d


    These files will probably be moved into the stable distribution on
    its next update.

    - ---------------------------------------------------------------------------------
    For apt-get: deb http://security.debian.org/ stable/updates main
    For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
    Mailing list: [email protected]
    Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg> -----BEGIN PGP SIGNATURE-----
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