Debian: DSA-1907-1: New kvm packages fix several vulnerabilities

    Date13 Oct 2009
    CategoryDebian
    40
    Posted ByLinuxSecurity Advisories
    Several vulnerabilities have been discovered in kvm, a full virtualization system. The Common Vulnerabilities and Exposures project identifies the following problems:
    
    - ------------------------------------------------------------------------
    Debian Security Advisory DSA-1907-1                  This email address is being protected from spambots. You need JavaScript enabled to view it.
    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: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Package info: `apt-cache show ' and http://packages.debian.org/
    
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