Ubuntu 2916-1: Perl vulnerabilities

    Date02 Mar 2016
    CategoryUbuntu
    44
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in Perl.
    ==========================================================================
    Ubuntu Security Notice USN-2916-1
    March 02, 2016
    
    perl vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 15.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    
    Summary:
    
    Several security issues were fixed in Perl.
    
    Software Description:
    - perl: Practical Extraction and Report Language
    
    Details:
    
    It was discovered that Perl incorrectly handled certain regular expressions
    with an invalid backreference. An attacker could use this issue to cause
    Perl to crash, resulting in a denial of service, or possibly execute
    arbitrary code. (CVE-2013-7422)
    
    Markus Vervier discovered that Perl incorrectly handled nesting in the
    Data::Dumper module. An attacker could use this issue to cause Perl to
    consume memory and crash, resulting in a denial of service. (CVE-2014-4330)
    
    Stephane Chazelas discovered that Perl incorrectly handled duplicate
    environment variables. An attacker could possibly use this issue to bypass
    the taint protection mechanism. (CVE-2016-2381)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 15.10:
      perl                            5.20.2-6ubuntu0.2
    
    Ubuntu 14.04 LTS:
      perl                            5.18.2-2ubuntu1.1
    
    Ubuntu 12.04 LTS:
      perl                            5.14.2-6ubuntu2.5
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2916-1
      CVE-2013-7422, CVE-2014-4330, CVE-2016-2381
    
    Package Information:
      https://launchpad.net/ubuntu/+source/perl/5.20.2-6ubuntu0.2
      https://launchpad.net/ubuntu/+source/perl/5.18.2-2ubuntu1.1
      https://launchpad.net/ubuntu/+source/perl/5.14.2-6ubuntu2.5
    
    
    
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