USN-4179-1: FriBidi vulnerability

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Ubuntu security notices

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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

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References


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