Ubuntu 3834-1: Perl vulnerabilities

    Date03 Dec 2018
    CategoryUbuntu
    1805
    Posted ByAnthony Pell
    Several security issues were fixed in Perl.
    ==========================================================================
    Ubuntu Security Notice USN-3834-1
    December 03, 2018
    
    perl vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.10
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    
    Summary:
    
    Several security issues were fixed in Perl.
    
    Software Description:
    - perl: Practical Extraction and Report Language
    
    Details:
    
    Jayakrishna Menon discovered that Perl incorrectly handled Perl_my_setenv.
    An attacker could use this issue to cause Perl to crash, resulting in a
    denial of service, or possibly execute arbitrary code. (CVE-2018-18311)
    
    Eiichi Tsukata discovered that Perl incorrectly handled certain regular
    expressions. An attacker could use this issue to cause Perl to crash,
    resulting in a denial of service, or possibly execute arbitrary code. This
    issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10.
    (CVE-2018-18312)
    
    Eiichi Tsukata discovered that Perl incorrectly handled certain regular
    expressions. An attacker could use this issue to cause Perl to crash,
    resulting in a denial of service. (CVE-2018-18313)
    
    Jakub Wilk discovered that Perl incorrectly handled certain regular
    expressions. An attacker could use this issue to cause Perl to crash,
    resulting in a denial of service. This issue only affected Ubuntu 16.04
    LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. (CVE-2018-18314)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.10:
      perl                            5.26.2-7ubuntu0.1
    
    Ubuntu 18.04 LTS:
      perl                            5.26.1-6ubuntu0.3
    
    Ubuntu 16.04 LTS:
      perl                            5.22.1-9ubuntu0.6
    
    Ubuntu 14.04 LTS:
      perl                            5.18.2-2ubuntu1.7
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3834-1
      CVE-2018-18311, CVE-2018-18312, CVE-2018-18313, CVE-2018-18314
    
    Package Information:
      https://launchpad.net/ubuntu/+source/perl/5.26.2-7ubuntu0.1
      https://launchpad.net/ubuntu/+source/perl/5.26.1-6ubuntu0.3
      https://launchpad.net/ubuntu/+source/perl/5.22.1-9ubuntu0.6
      https://launchpad.net/ubuntu/+source/perl/5.18.2-2ubuntu1.7
    
    
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