-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: binutils security update Advisory ID: RHSA-2021:4035-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:4035 Issue date: 2021-11-01 CVE Names: CVE-2021-42574 ===================================================================== 1. Summary: An update for binutils is now available for Red Hat Enterprise Linux 7.6 Advanced Update Support, Red Hat Enterprise Linux 7.6 Telco Extended Update Support, and Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions. 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 Server AUS (v. 7.6) - x86_64 Red Hat Enterprise Linux Server E4S (v. 7.6) - ppc64le, x86_64 Red Hat Enterprise Linux Server TUS (v. 7.6) - 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 "--unicode=default" 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 Server AUS (v. 7.6): Source: binutils-2.27-34.base.el7_6.4.src.rpm x86_64: binutils-2.27-34.base.el7_6.4.x86_64.rpm binutils-debuginfo-2.27-34.base.el7_6.4.i686.rpm binutils-debuginfo-2.27-34.base.el7_6.4.x86_64.rpm binutils-devel-2.27-34.base.el7_6.4.i686.rpm binutils-devel-2.27-34.base.el7_6.4.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.6): Source: binutils-2.27-34.base.el7_6.4.src.rpm ppc64le: binutils-2.27-34.base.el7_6.4.ppc64le.rpm binutils-debuginfo-2.27-34.base.el7_6.4.ppc64le.rpm binutils-devel-2.27-34.base.el7_6.4.ppc64le.rpm x86_64: binutils-2.27-34.base.el7_6.4.x86_64.rpm binutils-debuginfo-2.27-34.base.el7_6.4.i686.rpm binutils-debuginfo-2.27-34.base.el7_6.4.x86_64.rpm binutils-devel-2.27-34.base.el7_6.4.i686.rpm binutils-devel-2.27-34.base.el7_6.4.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.6): Source: binutils-2.27-34.base.el7_6.4.src.rpm x86_64: binutils-2.27-34.base.el7_6.4.x86_64.rpm binutils-debuginfo-2.27-34.base.el7_6.4.i686.rpm binutils-debuginfo-2.27-34.base.el7_6.4.x86_64.rpm binutils-devel-2.27-34.base.el7_6.4.i686.rpm binutils-devel-2.27-34.base.el7_6.4.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 . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYX+d2dzjgjWX9erEAQgKnA//ey5CR5grfgFND8azwrkwLI/DwpGt9HSF +VGoo4Bvu4FNkzD9HAweAG/7w9pjxKvlAnTnXQmuHLIJlw05c0uYWZv25UYD3mf/ qDbeL2hXmgHl7Ji0Mf83CGXMxh3zjBBazOQwLnvxchTb9ms3S8Li3tu0Ma6FlUgm uERzQNsVFwLOrkg/3v7PpeABLMbY7ZOkiUq0jMBI9Qxd+YVxZ0u0BUV9H58Dvgv/ NUTHQD27FBAf3uPjAqTCKRwpWQHE3ChOm8LhZa4IhSNjQg6vjX4FKncMjsdB9Lof zjhK74PUmWknThSYxrNez23a3M53IcRtNRnk63c0pfVlV46KyAbcG8mDiTpduNT6 ydGSDTWiSgSTsQsdIOxFaXEmhX9cf1ExuktMILPwNOGfdoJX0Nr9ywSyTsyvxc6D e0gSPetaWWbfpMFeOItIt4tZ+xjWGqT0ks9UHcLoMyJfIjIsSSKcIe1wVsyTKO59 tiwhcqV7DcgkgGG3eGO6qiRHkr94NGivfid13Kgk+9KSK+r8EPsXSfN75fGLxWAc Jlk4FSejWStZiPCDZyj/W0OvMdb1UArr+gli3ELy+4DMeaDEAFc0UVyR6Jub+VSm sUcN7RtCUoNYL+PFUCK8uMuc8hmW7RZiZmyIbTiPBYv2J7cm2ITa4ILoBn9lNzrn EretwxuM7hw= =pDyv -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce