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

Synopsis:          Moderate: gcc-toolset-10-annobin security update
Advisory ID:       RHSA-2021:4589-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:4589
Issue date:        2021-11-10
CVE Names:         CVE-2021-42574
====================================================================
1. Summary:

An update for gcc-toolset-10-annobin is now available for Red Hat
Enterprise Linux 8.4 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact
of Moderate. 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 AppStream EUS (v.8.4) - aarch64, ppc64le, s390x, x86_64

3. Description:

Annobin provides a compiler plugin to annotate and tools to examine
compiled binary files.

Security Fix(es):

* Developer environment: Unicode's bidirectional (BiDi) override characters
can cause trojan source attacks (CVE-2021-42574)

The following changes were introduced in annobin in order to facilitate
detection of BiDi Unicode characters:

This update of annobin adds a new annocheck test to detect the presence of
multibyte characters in symbol names.

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/):

2005819 - CVE-2021-42574 Developer environment: Unicode's bidirectional (BiDi) override characters can cause trojan source attacks

6. Package List:

Red Hat Enterprise Linux AppStream EUS (v.8.4):

Source:
gcc-toolset-10-annobin-9.29-1.el8_4.1.src.rpm

aarch64:
gcc-toolset-10-annobin-9.29-1.el8_4.1.aarch64.rpm
gcc-toolset-10-annobin-annocheck-debuginfo-9.29-1.el8_4.1.aarch64.rpm
gcc-toolset-10-annobin-debuginfo-9.29-1.el8_4.1.aarch64.rpm

ppc64le:
gcc-toolset-10-annobin-9.29-1.el8_4.1.ppc64le.rpm
gcc-toolset-10-annobin-annocheck-debuginfo-9.29-1.el8_4.1.ppc64le.rpm
gcc-toolset-10-annobin-debuginfo-9.29-1.el8_4.1.ppc64le.rpm

s390x:
gcc-toolset-10-annobin-9.29-1.el8_4.1.s390x.rpm
gcc-toolset-10-annobin-annocheck-debuginfo-9.29-1.el8_4.1.s390x.rpm
gcc-toolset-10-annobin-debuginfo-9.29-1.el8_4.1.s390x.rpm

x86_64:
gcc-toolset-10-annobin-9.29-1.el8_4.1.x86_64.rpm
gcc-toolset-10-annobin-annocheck-debuginfo-9.29-1.el8_4.1.x86_64.rpm
gcc-toolset-10-annobin-debuginfo-9.29-1.el8_4.1.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-2021-42574
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/security/vulnerabilities/RHSB-2021-007

8. Contact:

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

Copyright 2021 Red Hat, Inc.
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