Red Hat Security Advisory 2021-4585-03 - The gcc packages provide compilers for C, C++, Java, Fortran, Objective C, and Ada 95 GNU, as well as related support libraries.
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Red Hat Security Advisory
Synopsis: Moderate: gcc-toolset-10-gcc security update
Advisory ID: RHSA-2021:4585-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4585
Issue date: 2021-11-10
CVE Names: CVE-2021-42574
====================================================================
1. Summary:
An update for gcc-toolset-10-gcc is now available for Red Hat Enterprise
Linux 8.
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 CodeReady Linux Builder (v. 8) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64
3. Description:
The gcc packages provide compilers for C, C++, Java, Fortran, Objective C,
and Ada 95 GNU, as well as related support libraries.
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 gcc in order to facilitate
detection of BiDi Unicode characters:
This update implements a new warning option -Wbidirectional to warn about
possibly dangerous bidirectional characters.
There are three levels of warning supported by gcc:
"-Wbidirectional=unpaired", which warns about improperly terminated BiDi
contexts. (This is the default.)
"-Wbidirectional=none", which turns the warning off.
"-Wbidirectional=any", which warns about any use of bidirectional
characters.
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 (v. 8):
Source:
gcc-toolset-10-gcc-10.3.1-1.2.el8_5.src.rpm
aarch64:
gcc-toolset-10-gcc-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-gcc-c++-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-gcc-c++-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-gcc-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-gcc-gdb-plugin-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-gcc-gdb-plugin-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-gcc-gfortran-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-gcc-gfortran-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-gcc-plugin-devel-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-libasan-devel-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-libatomic-devel-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-libgccjit-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-libitm-devel-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-liblsan-devel-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-libstdc++-devel-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-libstdc++-docs-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-libtsan-devel-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-libubsan-devel-10.3.1-1.2.el8_5.aarch64.rpm
libasan6-10.3.1-1.2.el8_5.aarch64.rpm
libasan6-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
ppc64le:
gcc-toolset-10-gcc-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-gcc-c++-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-gcc-c++-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-gcc-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-gcc-gdb-plugin-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-gcc-gdb-plugin-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-gcc-gfortran-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-gcc-gfortran-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-gcc-plugin-devel-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-libasan-devel-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-libatomic-devel-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-libgccjit-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-libitm-devel-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-liblsan-devel-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-libquadmath-devel-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-libstdc++-devel-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-libstdc++-docs-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-libtsan-devel-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-libubsan-devel-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-offload-nvptx-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
libasan6-10.3.1-1.2.el8_5.ppc64le.rpm
libasan6-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
s390x:
gcc-toolset-10-gcc-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-gcc-c++-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-gcc-c++-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-gcc-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-gcc-gdb-plugin-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-gcc-gdb-plugin-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-gcc-gfortran-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-gcc-gfortran-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-gcc-plugin-devel-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-libasan-devel-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-libatomic-devel-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-libgccjit-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-libitm-devel-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-libstdc++-devel-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-libstdc++-docs-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-libubsan-devel-10.3.1-1.2.el8_5.s390x.rpm
libasan6-10.3.1-1.2.el8_5.s390x.rpm
libasan6-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
x86_64:
gcc-toolset-10-gcc-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-gcc-c++-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-gcc-c++-debuginfo-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-gcc-c++-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-gcc-debuginfo-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-gcc-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-gcc-gdb-plugin-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-gcc-gdb-plugin-debuginfo-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-gcc-gdb-plugin-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-gcc-gfortran-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-gcc-gfortran-debuginfo-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-gcc-gfortran-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-gcc-plugin-devel-debuginfo-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-gcc-plugin-devel-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-libasan-devel-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-libasan-devel-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-libatomic-devel-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-libatomic-devel-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-libgccjit-debuginfo-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-libgccjit-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-libitm-devel-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-libitm-devel-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-liblsan-devel-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-libquadmath-devel-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-libquadmath-devel-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-libstdc++-devel-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-libstdc++-devel-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-libstdc++-docs-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-libtsan-devel-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-libubsan-devel-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-libubsan-devel-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-offload-nvptx-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
libasan6-10.3.1-1.2.el8_5.i686.rpm
libasan6-10.3.1-1.2.el8_5.x86_64.rpm
libasan6-debuginfo-10.3.1-1.2.el8_5.i686.rpm
libasan6-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
Red Hat CodeReady Linux Builder (v. 8):
aarch64:
gcc-toolset-10-gcc-c++-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-gcc-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-gcc-gdb-plugin-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-gcc-gfortran-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-gcc-plugin-devel-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-gcc-plugin-devel-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
gcc-toolset-10-libgccjit-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
libasan6-debuginfo-10.3.1-1.2.el8_5.aarch64.rpm
ppc64le:
gcc-toolset-10-gcc-c++-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-gcc-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-gcc-gdb-plugin-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-gcc-gfortran-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-gcc-plugin-devel-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-gcc-plugin-devel-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-libgccjit-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
gcc-toolset-10-offload-nvptx-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
libasan6-debuginfo-10.3.1-1.2.el8_5.ppc64le.rpm
s390x:
gcc-toolset-10-gcc-c++-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-gcc-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-gcc-gdb-plugin-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-gcc-gfortran-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-gcc-plugin-devel-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-gcc-plugin-devel-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
gcc-toolset-10-libgccjit-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
libasan6-debuginfo-10.3.1-1.2.el8_5.s390x.rpm
x86_64:
gcc-toolset-10-gcc-c++-debuginfo-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-gcc-c++-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-gcc-debuginfo-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-gcc-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-gcc-gdb-plugin-debuginfo-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-gcc-gdb-plugin-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-gcc-gfortran-debuginfo-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-gcc-gfortran-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-gcc-plugin-devel-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-gcc-plugin-devel-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-gcc-plugin-devel-debuginfo-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-gcc-plugin-devel-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-libgccjit-debuginfo-10.3.1-1.2.el8_5.i686.rpm
gcc-toolset-10-libgccjit-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
gcc-toolset-10-offload-nvptx-debuginfo-10.3.1-1.2.el8_5.x86_64.rpm
libasan6-debuginfo-10.3.1-1.2.el8_5.i686.rpm
libasan6-debuginfo-10.3.1-1.2.el8_5.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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