Debian: kernel privilege escalation vulnerability

    Date03 Apr 2003
    CategoryDebian
    2020
    Posted ByLinuxSecurity Advisories
    The kernel module loader in Linux 2.2 and Linux 2.4 kernels has a flaw in ptrace.
    
    - --------------------------------------------------------------------------
    Debian Security Advisory DSA 276-1                     This email address is being protected from spambots. You need JavaScript enabled to view it. 
    http://www.debian.org/security/                             Martin Schulze
    April 3rd, 2003                          http://www.debian.org/security/faq
    - --------------------------------------------------------------------------
    
    Packages       : kernel-patch-2.4.17-s390, kernel-image-2.4.17-s390
    Vulnerability  : local privilege escalation
    Problem-Type   : local
    Debian-specific: no
    CVE Id         : CAN-2003-0127
    
    The kernel module loader in Linux 2.2 and Linux 2.4 kernels has a flaw
    in ptrace.  This hole allows local users to obtain root privileges by
    using ptrace to attach to a child process that is spawned by the
    kernel.  Remote exploitation of this hole is not possible.
    
    This advisory only covers kernel packages for the S/390 architecture.
    Other architectures will be covered by separate advisories.
    
    For the stable distribution (woody) this problem has been fixed in the
    following versions:
      kernel-patch-2.4.17-s390: version 0.0.20020816-0.woody.1.1
      kernel-image-2.4.17-s390: version 2.4.17-2.woody.2.2
    
    The old stable distribution (potato) is not affected by this problem
    for this architecture since s390 was first released with Debian
    GNU/Linux 3.0 (woody).
    
    For the unstable distribution (sid) this problem will be fixed soon.
    
    We recommend that you upgrade your kernel-images packages immediately.
    
    
    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 3.0 alias woody
    - --------------------------------
    
      Source archives:
    
         http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-s390/kernel-patch-2.4.17-s390_0.0.20020816-0.woody.1.1.dsc
          Size/MD5 checksum:      793 797d475344401f5fb9ad14deb88cd9eb
         http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-s390/kernel-patch-2.4.17-s390_0.0.20020816-0.woody.1.1.diff.gz
          Size/MD5 checksum:     6640 0fa8c3bc6c33d5fe47200e2e78c895fb
         http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-s390/kernel-patch-2.4.17-s390_0.0.20020816.orig.tar.gz
          Size/MD5 checksum:   338001 5979fbe7c3325033536dfd3914e22dbd
    
         http://security.debian.org/pool/updates/main/k/kernel-image-2.4.17-s390/kernel-image-2.4.17-s390_2.4.17-2.woody.2.2.dsc
          Size/MD5 checksum:      766 4ed91ba4468490b1f000f2f50fefcfcd
         http://security.debian.org/pool/updates/main/k/kernel-image-2.4.17-s390/kernel-image-2.4.17-s390_2.4.17-2.woody.2.2.tar.gz
          Size/MD5 checksum:     7041 aa4841ee18ad551085aac60b2afd156f
    
      Architecture independent components:
    
         http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-s390/kernel-patch-2.4.17-s390_0.0.20020816-0.woody.1.1_all.deb
          Size/MD5 checksum:   301464 691bc1a529cb6125bb04ca43d795c139
    
      IBM S/390 architecture:
    
         http://security.debian.org/pool/updates/main/k/kernel-image-2.4.17-s390/kernel-headers-2.4.17_2.4.17-2.woody.2.2_s390.deb
          Size/MD5 checksum:  3316464 5e748d0b8376f80bcbc6f1fea8d73b64
         http://security.debian.org/pool/updates/main/k/kernel-image-2.4.17-s390/kernel-image-2.4.17-s390_2.4.17-2.woody.2.2_s390.deb
          Size/MD5 checksum:  1339368 fa1ff23854a5ae570efec050bc42eb13
    
    
      These files will probably be moved into the stable distribution on
      its next revision.
    
    - ---------------------------------------------------------------------------------
    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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