-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: binutils security update Advisory ID: RHSA-2021:4038-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:4038 Issue date: 2021-11-01 CVE Names: CVE-2021-42574 ===================================================================== 1. Summary: An update for binutils is now available for Red Hat Enterprise Linux 7.2 Advanced 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 Server AUS (v. 7.2) - 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. 7.2): Source: binutils-2.23.52.0.1-55.el7_2.4.src.rpm x86_64: binutils-2.23.52.0.1-55.el7_2.4.x86_64.rpm binutils-debuginfo-2.23.52.0.1-55.el7_2.4.i686.rpm binutils-debuginfo-2.23.52.0.1-55.el7_2.4.x86_64.rpm binutils-devel-2.23.52.0.1-55.el7_2.4.i686.rpm binutils-devel-2.23.52.0.1-55.el7_2.4.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+ajtzjgjWX9erEAQjJkRAAhWNVihxyI02Ca78h7APRgtMzfiwCMH8J uYjD9i3lIgQ9lI1FJQtzcug5jsHbD8NEbs8u3he/MxI+yR/5g8aab5QkUdiByAzB /3mVtvFfsF3uldKNVzlKILPBMMb5Lcz+p8ojCcBmfvcl9jpFqHyti69yKXtRUc8t tHowTiyrf4RlyBFMxfq8t84skyTIYdxUWHu31kkoMDAQCE+BRTkh2PtEd4m2CIsI RSJk/q+tMbnmgGu5siCGqHS7D28KszMYAsnSZRhBZ3ZzJYUnLqIk7XbHrHfIspLu Ua8ako6cnL5OP+se8OdYdzz23LQzfeZye+cHTVqhXOwq+MpwP62kvF1QPzWmuF4F TOhvqyQj6nPzkaRis9jCS+NdV6mLLsHpIjLFSEMCUcb6IG3MVvgUZG1RaiIw6skr Q5o2kZ+jpRUZu7a+97Nkdl11ngBma1qJSUvvgQSJuh9L7G4aqLnDqcPIVMiMPfM4 h1MfOYf2UD/7IoJ0Ivp8hsFE67w0smnXRTmL6yUbNECcJrSdezKQEDYSRHsEo6ts kQ7SAtw+09kzqqStl3TPvxzC5rNcFb72rlHuxcz4c+sXMvv8+/xGTDzzIePqGn4T Xigd+PC0U7r1CXuJ0WBVSsfWYoda7c7ZAb5CwosbkGfaMqVrGoTZ7PswPiZLGyZz O93bF7VnrSI= =/R5Z -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce