Ubuntu 3593-1: Zsh vulnerabilities

    Date08 Mar 2018
    CategoryUbuntu
    8072
    Posted ByAnthony Pell
    Several security issues were fixed in Zsh.
    ==========================================================================
    Ubuntu Security Notice USN-3593-1
    March 08, 2018
    
    zsh vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 17.10
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    
    Summary:
    
    Several security issues were fixed in Zsh.
    
    Software Description:
    - zsh: shell with lots of features
    
    Details:
    
    It was discovered that Zsh incorrectly handled certain enviroment
    variables. An attacker could possibly use this issue to gain privileged
    access to the system. This issue only affected Ubuntu 14.04 LTS. 
    (CVE-2014-10070)
    
    It was discovered that Zsh incorrectly handled certain inputs.
    An attacker could possibly use this to execute arbitrary code. This
    issue only affected Ubuntu 14.04 LTS. (CVE-2014-10071)
    
    It was discovered that Zsh incorrectly handled some symbolic links.
    An attacker could possibly use this to execute arbitrary code. This
    issue only affected Ubuntu 14.04 LTS. (CVE-2014-10072)
    
    It was discovered that Zsh incorrectly handled certain errors. An
    attacker could possibly use this issue to cause a denial of service.
    (CVE-2016-10714)
    
    It was discovered that Zsh incorrectly handled certain commands. An
    attacker could possibly use this to execute arbitrary code. 
    (CVE-2017-18205)
    
    It was discovered that Zsh incorrectly handled certain symlinks. An
    attacker could possibly use this to execute arbitrary code. This issue
    only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-18206)
    
    It was discovered that Zsh incorrectly handled certain inputs. An
    attacker could possible use to execute arbitrary code. This issue only
    affected Ubuntu 17.10. (CVE-2018-7548)
    
    It was discovered that Zsh incorrectly handled certain inputs. An
    attacker could possibly use this to cause a denial of service. 
    (CVE-2018-7549)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 17.10:
      zsh                             5.2-5ubuntu1.1
    
    Ubuntu 16.04 LTS:
      zsh                             5.1.1-1ubuntu2.1
    
    Ubuntu 14.04 LTS:
      zsh                             5.0.2-3ubuntu6.1
    
    After a standard system update you need to restart Zsh to make
    all the necessary changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3593-1
      CVE-2014-10070, CVE-2014-10071, CVE-2014-10072, CVE-2016-10714,
      CVE-2017-18205, CVE-2017-18206, CVE-2018-7548, CVE-2018-7549
    
    Package Information:
      https://launchpad.net/ubuntu/+source/zsh/5.2-5ubuntu1.1
      https://launchpad.net/ubuntu/+source/zsh/5.1.1-1ubuntu2.1
      https://launchpad.net/ubuntu/+source/zsh/5.0.2-3ubuntu6.1
    
    You are not authorised to post comments.

    Comments powered by CComment

    LinuxSecurity Poll

    What do you think of the articles on LinuxSecurity?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 3 answer(s).
    /main-polls/24-what-do-you-think-of-the-quality-of-the-articles-on-linuxsecurity?task=poll.vote&format=json
    24
    radio
    [{"id":"87","title":"Excellent, don't change a thing!","votes":"23","type":"x","order":"1","pct":53.49,"resources":[]},{"id":"88","title":"Should be more technical","votes":"5","type":"x","order":"2","pct":11.63,"resources":[]},{"id":"89","title":"Should include more HOWTOs","votes":"15","type":"x","order":"3","pct":34.88,"resources":[]}]["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"]["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"]350
    bottom200

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.