-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

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

Synopsis:          Moderate: binutils security update
Advisory ID:       RHSA-2021:4602-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:4602
Issue date:        2021-11-10
CVE Names:         CVE-2021-42574
====================================================================
1. Summary:

An update for binutils is now available for Red Hat Enterprise Linux 8.1
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. 8.1) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS EUS (v. 8.1) - aarch64, ppc64le, s390x, x86_64

3. Description:

The binutils packages provide a collection of binary utilities for the
manipulation of object code in various object file formats. It includes the
ar, as, gprof, ld, nm, objcopy, objdump, ranlib, readelf, size, strings,
strip, and addr2line utilities.

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 binutils in order to facilitate
detection of BiDi Unicode characters:

Tools which display names or strings (readelf, strings, nm, objdump) have a
new command line option --unicode / -U which controls how Unicode
characters are handled.

Using "--unicodeÞfault" will treat them as normal for the tool. This is
the default behaviour when --unicode option is not used.
Using "--unicode=locale" will display them according to the current locale.
Using "--unicode=hex" will display them as hex byte values.
Using "--unicode=escape" will display them as Unicode escape sequences.
Using "--unicode=highlight" will display them as Unicode escape sequences
highlighted in red, if supported by the output device.

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. 8.1):

aarch64:
binutils-debuginfo-2.30-58.el8_1.3.aarch64.rpm
binutils-debugsource-2.30-58.el8_1.3.aarch64.rpm
binutils-devel-2.30-58.el8_1.3.aarch64.rpm

ppc64le:
binutils-debuginfo-2.30-58.el8_1.3.ppc64le.rpm
binutils-debugsource-2.30-58.el8_1.3.ppc64le.rpm
binutils-devel-2.30-58.el8_1.3.ppc64le.rpm

s390x:
binutils-debuginfo-2.30-58.el8_1.3.s390x.rpm
binutils-debugsource-2.30-58.el8_1.3.s390x.rpm
binutils-devel-2.30-58.el8_1.3.s390x.rpm

x86_64:
binutils-debuginfo-2.30-58.el8_1.3.i686.rpm
binutils-debuginfo-2.30-58.el8_1.3.x86_64.rpm
binutils-debugsource-2.30-58.el8_1.3.i686.rpm
binutils-debugsource-2.30-58.el8_1.3.x86_64.rpm
binutils-devel-2.30-58.el8_1.3.i686.rpm
binutils-devel-2.30-58.el8_1.3.x86_64.rpm

Red Hat Enterprise Linux BaseOS EUS (v. 8.1):

Source:
binutils-2.30-58.el8_1.3.src.rpm

aarch64:
binutils-2.30-58.el8_1.3.aarch64.rpm
binutils-debuginfo-2.30-58.el8_1.3.aarch64.rpm
binutils-debugsource-2.30-58.el8_1.3.aarch64.rpm

ppc64le:
binutils-2.30-58.el8_1.3.ppc64le.rpm
binutils-debuginfo-2.30-58.el8_1.3.ppc64le.rpm
binutils-debugsource-2.30-58.el8_1.3.ppc64le.rpm

s390x:
binutils-2.30-58.el8_1.3.s390x.rpm
binutils-debuginfo-2.30-58.el8_1.3.s390x.rpm
binutils-debugsource-2.30-58.el8_1.3.s390x.rpm

x86_64:
binutils-2.30-58.el8_1.3.x86_64.rpm
binutils-debuginfo-2.30-58.el8_1.3.x86_64.rpm
binutils-debugsource-2.30-58.el8_1.3.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.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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tCg8
-----END PGP SIGNATURE-----

--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://listman.redhat.com/mailman/listinfo/rhsa-announce