N/A - USN-4179-1

Executive Summary

Summary
Title	FriBidi vulnerability

Informations
Name	USN-4179-1	First vendor Publication	2019-11-07
Vendor	Ubuntu	Last vendor Modification	2019-11-07
Severity (Vendor)	N/A	Revision	N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

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Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score	N/A	Attack Range	N/A
Cvss Impact Score	N/A	Attack Complexity	N/A
Cvss Expoit Score	N/A	Authentication	N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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