USN-4179-1: FriBidi vulnerability
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.
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