Ubuntu 4179-1: FriBidi vulnerability

    Date08 Nov 2019
    CategoryUbuntu
    350
    Posted ByLinuxSecurity Advisories
    Ubuntu Large
    Applications using FriBidi could be made to crash or run programs as your login if it displayed specially crafted text.
    ==========================================================================
    Ubuntu Security Notice USN-4179-1
    November 07, 2019
    
    fribidi vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.10
    - Ubuntu 19.04
    
    Summary:
    
    Applications using FriBidi could be made to crash or run programs as your
    login if it displayed specially crafted text.
    
    Software Description:
    - fribidi: Free Implementation of the Unicode BiDi algorithm (utility)
    
    Details:
    
    Alex Murray discovered a stack-based buffer overflow when handling a large
    number of unicode isolate directives. An attacker could use this to cause a
    denial of service or possibly execute arbitrary code.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.10:
      libfribidi0                     1.0.5-3.1ubuntu0.19.10.1
    
    Ubuntu 19.04:
      libfribidi0                     1.0.5-3.1ubuntu0.19.04.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4179-1
      CVE-2019-18397
    
    Package Information:
      https://launchpad.net/ubuntu/+source/fribidi/1.0.5-3.1ubuntu0.19.10.1
      https://launchpad.net/ubuntu/+source/fribidi/1.0.5-3.1ubuntu0.19.04.1
    
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