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Critical Buffer Overflow in fribidi Update RHSA-2020-0291-01 for RHEL

red hat
Calendar Grey January 30, 2020
Dist Redhat Esm H88
A significant fribidi security patch for Red Hat Enterprise Linux resolves a serious buffer overflow vulnerability with severe consequences. Discover further details.
An update for fribidi is now available for Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

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

Summary

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.

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow code execution Red Hat Enterprise Linux fribidi

References

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

Package List

Red Hat Enterprise Linux AppStream E4S (v. 8.0):
Source: fribidi-1.0.4-6.el8_0.1.src.rpm
ppc64le: fribidi-1.0.4-6.el8_0.1.ppc64le.rpm fribidi-debuginfo-1.0.4-6.el8_0.1.ppc64le.rpm fribidi-debugsource-1.0.4-6.el8_0.1.ppc64le.rpm fribidi-devel-1.0.4-6.el8_0.1.ppc64le.rpm
x86_64: fribidi-1.0.4-6.el8_0.1.i686.rpm fribidi-1.0.4-6.el8_0.1.x86_64.rpm fribidi-debuginfo-1.0.4-6.el8_0.1.i686.rpm fribidi-debuginfo-1.0.4-6.el8_0.1.x86_64.rpm fribidi-debugsource-1.0.4-6.el8_0.1.i686.rpm fribidi-debugsource-1.0.4-6.el8_0.1.x86_64.rpm fribidi-devel-1.0.4-6.el8_0.1.i686.rpm fribidi-devel-1.0.4-6.el8_0.1.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:0291-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0291
Issue date: 2020-01-30

Topic

An update for fribidi is now available for Red Hat Enterprise Linux 8.0Update Services for SAP Solutions.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow code execution Red Hat Enterprise Linux fribidi

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream E4S (v. 8.0) - ppc64le, x86_64

Bugs Fixed

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

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