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Red Hat Security Advisory 2019-4326-01

Red Hat Security Advisory 2019-4326-01
Posted Dec 19, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-4326-01 - A library to handle bidirectional scripts, so that the display is done in the proper way, while the text data itself is always written in logical order. Issues addressed include buffer overflow, code execution, and denial of service vulnerabilities.

tags | advisory, denial of service, overflow, vulnerability, code execution
systems | linux, redhat
advisories | CVE-2019-18397
SHA-256 | b9d0915061cf43dbc1453ef5fd0fb6b2e6ebe01cf43682aaa4f4195f863c6394

Red Hat Security Advisory 2019-4326-01

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====================================================================
Red Hat Security Advisory

Synopsis: Important: fribidi security update
Advisory ID: RHSA-2019:4326-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:4326
Issue date: 2019-12-19
CVE Names: CVE-2019-18397
====================================================================
1. Summary:

An update for fribidi is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64

3. Description:

A library to handle bidirectional scripts (for example Hebrew, Arabic), so
that the display is done in the proper way, while the text data itself is
always written in logical order.

Security Fix(es):

* fribidi: buffer overflow in fribidi_get_par_embedding_levels_ex() in
lib/fribidi-bidi.c leading to denial of service and possible code execution
(CVE-2019-18397)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1768750 - CVE-2019-18397 fribidi: buffer overflow in fribidi_get_par_embedding_levels_ex() in lib/fribidi-bidi.c leading to denial of service and possible code execution

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
fribidi-1.0.2-1.el7_7.1.src.rpm

x86_64:
fribidi-1.0.2-1.el7_7.1.i686.rpm
fribidi-1.0.2-1.el7_7.1.x86_64.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.i686.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
fribidi-debuginfo-1.0.2-1.el7_7.1.i686.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.x86_64.rpm
fribidi-devel-1.0.2-1.el7_7.1.i686.rpm
fribidi-devel-1.0.2-1.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
fribidi-1.0.2-1.el7_7.1.src.rpm

x86_64:
fribidi-1.0.2-1.el7_7.1.i686.rpm
fribidi-1.0.2-1.el7_7.1.x86_64.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.i686.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

x86_64:
fribidi-debuginfo-1.0.2-1.el7_7.1.i686.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.x86_64.rpm
fribidi-devel-1.0.2-1.el7_7.1.i686.rpm
fribidi-devel-1.0.2-1.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
fribidi-1.0.2-1.el7_7.1.src.rpm

ppc64:
fribidi-1.0.2-1.el7_7.1.ppc.rpm
fribidi-1.0.2-1.el7_7.1.ppc64.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.ppc.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.ppc64.rpm
fribidi-devel-1.0.2-1.el7_7.1.ppc.rpm
fribidi-devel-1.0.2-1.el7_7.1.ppc64.rpm

ppc64le:
fribidi-1.0.2-1.el7_7.1.ppc64le.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.ppc64le.rpm
fribidi-devel-1.0.2-1.el7_7.1.ppc64le.rpm

s390x:
fribidi-1.0.2-1.el7_7.1.s390.rpm
fribidi-1.0.2-1.el7_7.1.s390x.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.s390.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.s390x.rpm
fribidi-devel-1.0.2-1.el7_7.1.s390.rpm
fribidi-devel-1.0.2-1.el7_7.1.s390x.rpm

x86_64:
fribidi-1.0.2-1.el7_7.1.i686.rpm
fribidi-1.0.2-1.el7_7.1.x86_64.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.i686.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.x86_64.rpm
fribidi-devel-1.0.2-1.el7_7.1.i686.rpm
fribidi-devel-1.0.2-1.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
fribidi-1.0.2-1.el7_7.1.src.rpm

x86_64:
fribidi-1.0.2-1.el7_7.1.i686.rpm
fribidi-1.0.2-1.el7_7.1.x86_64.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.i686.rpm
fribidi-debuginfo-1.0.2-1.el7_7.1.x86_64.rpm
fribidi-devel-1.0.2-1.el7_7.1.i686.rpm
fribidi-devel-1.0.2-1.el7_7.1.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2019-18397
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2019 Red Hat, Inc.
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