==========================================================================
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
—–BEGIN PGP SIGNATURE—–

iQEzBAEBCgAdFiEEiOlTC8vdwgBRe16w9JjS2d59rZwFAl3ErjUACgkQ9JjS2d59
rZxghgf/XVX45nazTYi1hljxShBDPktN0wJAZHHn4izh+NGNRSpk5nbWvRhbxNx+
dUMFwzt6+WpIu1i8yR/APW8K+K4XYhrIV7MZ9yytBvOR8gZEDlWjhEj7ylC4KIwW
Aspz6m/m3fgIfdB6dmo/0eB0zyhaiNlp0ykrdKgJIjp9TiuFB5hy0rKSTL971npf
FjD6SiHdH2Lb3xq/tG04L9kbc2cj3LzFq57pxuk2z5sWH2OBoEwQNNupHWlSZ77y
glHxaqLoWIf68P/b0cuHNOPewrwiuLpncu5Gu7dfygn62bEuPinSfqGpQFZMsHDt
raXp1+CvIOVugR34THoxbJKVjASoYA==
=MSS4
—–END PGP SIGNATURE——-