-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: binutils security update Advisory ID: RHSA-2021:4034-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:4034 Issue date: 2021-11-01 CVE Names: CVE-2021-42574 ===================================================================== 1. Summary: An update for binutils is now available for Red Hat Enterprise Linux 7.7 Advanced Update Support, Red Hat Enterprise Linux 7.7 Telco Extended Update Support, and Red Hat Enterprise Linux 7.7 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. 7.7) - x86_64 Red Hat Enterprise Linux Server E4S (v. 7.7) - ppc64le, x86_64 Red Hat Enterprise Linux Server TUS (v. 7.7) - 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. 7.7): Source: binutils-2.27-41.base.el7_7.4.src.rpm x86_64: binutils-2.27-41.base.el7_7.4.x86_64.rpm binutils-debuginfo-2.27-41.base.el7_7.4.i686.rpm binutils-debuginfo-2.27-41.base.el7_7.4.x86_64.rpm binutils-devel-2.27-41.base.el7_7.4.i686.rpm binutils-devel-2.27-41.base.el7_7.4.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.7): Source: binutils-2.27-41.base.el7_7.4.src.rpm ppc64le: binutils-2.27-41.base.el7_7.4.ppc64le.rpm binutils-debuginfo-2.27-41.base.el7_7.4.ppc64le.rpm binutils-devel-2.27-41.base.el7_7.4.ppc64le.rpm x86_64: binutils-2.27-41.base.el7_7.4.x86_64.rpm binutils-debuginfo-2.27-41.base.el7_7.4.i686.rpm binutils-debuginfo-2.27-41.base.el7_7.4.x86_64.rpm binutils-devel-2.27-41.base.el7_7.4.i686.rpm binutils-devel-2.27-41.base.el7_7.4.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.7): Source: binutils-2.27-41.base.el7_7.4.src.rpm x86_64: binutils-2.27-41.base.el7_7.4.x86_64.rpm binutils-debuginfo-2.27-41.base.el7_7.4.i686.rpm binutils-debuginfo-2.27-41.base.el7_7.4.x86_64.rpm binutils-devel-2.27-41.base.el7_7.4.i686.rpm binutils-devel-2.27-41.base.el7_7.4.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+fiNzjgjWX9erEAQg35g//aW4kHiix1TzTpHpxm7cBwTAlFJ6zHjPN 3V/boYXi66tH2W6fiTCTcX34SH0rV/sZ6iKK9MrZ650kMFE2S467xKE7N51eqPNX LYidQAzCQk9k5sypMNHZSP+XMfCZ95phPtvnPxpXEPVpzGbT/KyqzpVWURLyxk2M v89e3r94pOaiQZluLZHT5jth1dKH+KdcyWy5q7L3jyARwzsFlDrUC8wpVMOqm/pW Q9eiWsJWc3XU8U8F2RHdqlsU+vPK283JqowKX9BBd2SP//T50xZRfPuqRCSM0WNw 3fE0I2Dw3jUZ8W/E3n5HuuS5M4cOUdTPek/RPNs0D0PD0GIno4RLjwaxD7/TJLd0 oYh+VURphxtdx6cLQS+P1pYhAnvto2vVI0jrAKh0P6BISXHjEgs0rhq2jC9ekAGY 4jw24i76N1ZMD9bbNxF6c1Qib7uCz2vKzJBpffEzLgqsz0cvnE+6Zvrdy0pSv4vk WxwUt55JLYh9kVLAaaw71Ah0/k207TapD0KG5idAqICou7FDTipxLaB/2podBXjG n85L42m9Z1g5LNVnebX5M7WJfa0VK5pvNsOno4kDxR4jD0JE5ki7TYir8C3Q2xqA OB+A+JXDaa0MwxKn+dztUh7wnMexiE6BEIM/ye/Y0QqAEOctfavZ5P2G6/p2QNhh 9wdHCsW6PCE= =eEkP -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce