Ubuntu 2651-1: GNU patch vulnerabilities

    Date22 Jun 2015
    CategoryUbuntu
    50
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in GNU patch.
    ==========================================================================
    Ubuntu Security Notice USN-2651-1
    June 22, 2015
    
    patch vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    
    Summary:
    
    Several security issues were fixed in GNU patch.
    
    Software Description:
    - patch: Apply a diff file to an original
    
    Details:
    
    Jakub Wilk discovered that GNU patch did not correctly handle file paths in
    patch files. An attacker could specially craft a patch file that could
    overwrite arbitrary files with the privileges of the user invoking the program.
    This issue only affected Ubuntu 12.04 LTS. (CVE-2010-4651)
    
    László Böszörményi discovered that GNU patch did not correctly handle some
    patch files. An attacker could specially craft a patch file that could cause a
    denial of service. (CVE-2014-9637)
    
    Jakub Wilk discovered that GNU patch did not correctly handle symbolic links in
    git style patch files. An attacker could specially craft a patch file that
    could overwrite arbitrary files with the privileges of the user invoking the
    program. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10.
    (CVE-2015-1196)
    
    Jakub Wilk discovered that GNU patch did not correctly handle file renames in
    git style patch files. An attacker could specially craft a patch file that
    could overwrite arbitrary files with the privileges of the user invoking the
    program. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10.
    (CVE-2015-1395)
    
    Jakub Wilk discovered the fix for CVE-2015-1196 was incomplete for GNU patch.
    An attacker could specially craft a patch file that could overwrite arbitrary
    files with the privileges of the user invoking the program. This issue only
    affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2015-1396)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.10:
      patch                           2.7.1-5ubuntu0.3
    
    Ubuntu 14.04 LTS:
      patch                           2.7.1-4ubuntu2.3
    
    Ubuntu 12.04 LTS:
      patch                           2.6.1-3ubuntu0.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2651-1
      CVE-2010-4651, CVE-2014-9637, CVE-2015-1196, CVE-2015-1395,
      CVE-2015-1396
    
    Package Information:
      https://launchpad.net/ubuntu/+source/patch/2.7.1-5ubuntu0.3
      https://launchpad.net/ubuntu/+source/patch/2.7.1-4ubuntu2.3
      https://launchpad.net/ubuntu/+source/patch/2.6.1-3ubuntu0.1
    
    
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