-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Moderate: binutils security update Advisory ID: RHSA-2021:4596-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:4596 Issue date: 2021-11-10 CVE Names: CVE-2021-42574 ==================================================================== 1. Summary: An update for binutils is now available for Red Hat Enterprise Linux 8.4 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.8.4) - aarch64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux BaseOS EUS (v.8.4) - 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.8.4): aarch64: binutils-debuginfo-2.30-93.el8_4.2.aarch64.rpm binutils-debugsource-2.30-93.el8_4.2.aarch64.rpm binutils-devel-2.30-93.el8_4.2.aarch64.rpm ppc64le: binutils-debuginfo-2.30-93.el8_4.2.ppc64le.rpm binutils-debugsource-2.30-93.el8_4.2.ppc64le.rpm binutils-devel-2.30-93.el8_4.2.ppc64le.rpm s390x: binutils-debuginfo-2.30-93.el8_4.2.s390x.rpm binutils-debugsource-2.30-93.el8_4.2.s390x.rpm binutils-devel-2.30-93.el8_4.2.s390x.rpm x86_64: binutils-debuginfo-2.30-93.el8_4.2.i686.rpm binutils-debuginfo-2.30-93.el8_4.2.x86_64.rpm binutils-debugsource-2.30-93.el8_4.2.i686.rpm binutils-debugsource-2.30-93.el8_4.2.x86_64.rpm binutils-devel-2.30-93.el8_4.2.i686.rpm binutils-devel-2.30-93.el8_4.2.x86_64.rpm Red Hat Enterprise Linux BaseOS EUS (v.8.4): Source: binutils-2.30-93.el8_4.2.src.rpm aarch64: binutils-2.30-93.el8_4.2.aarch64.rpm binutils-debuginfo-2.30-93.el8_4.2.aarch64.rpm binutils-debugsource-2.30-93.el8_4.2.aarch64.rpm ppc64le: binutils-2.30-93.el8_4.2.ppc64le.rpm binutils-debuginfo-2.30-93.el8_4.2.ppc64le.rpm binutils-debugsource-2.30-93.el8_4.2.ppc64le.rpm s390x: binutils-2.30-93.el8_4.2.s390x.rpm binutils-debuginfo-2.30-93.el8_4.2.s390x.rpm binutils-debugsource-2.30-93.el8_4.2.s390x.rpm x86_64: binutils-2.30-93.el8_4.2.x86_64.rpm binutils-debuginfo-2.30-93.el8_4.2.x86_64.rpm binutils-debugsource-2.30-93.el8_4.2.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 iQIVAwUBYYvZ1dzjgjWX9erEAQjInw/9GD+BYGaWMOo+pidclEBSROfDMQDOgSeD /1IsyKS7C66otKVIxqEOPFMdc+PtB+z5Is6j48wsEwhxfWVXzZNseuzngDPXVr6E csVtITwvVH/2lmrs/I+yQSUOHcCcyPUqbaZ36UwmyrCyegrsiUSVhNwI/vxD+HE7 WufSQPkYA3DAE64ye4vTLxuTdzb+O41tuxkW5SdEXBTcjGBskvgjqDzbU7ZpyxV3 Zy6mLhdkfgCig//EwjdL1+S5Ic4TyDyPX0rQZ9R4kbuvM3I2cq8GIBlHMuGTM5q9 ZB8XwOLrF7xqLU580HYU1AGUGTyey7gxMU+PxM3pGGaJuOC66cMaE86E5QmJ597m LnZvlNbanB2rRxXdkxTMLfkt0rNkUNuOGXBLG6qgYb5iGMuX19OCiYubCyR4m+Zi aBVHN9tDN/VlKuEK30KS2kk874mLyq30RmPXxc33ymY1tJG1oiJHW/SjQ7uq0iSW A5sfOOl4mhLsjxDV1D+LKTcYBvWxKjDamaLhUMxy1PwT8PK6jZNVSlELxfjVyoeE HHvVOom+80OQLuCCOUU3xwYPck45vHUav+83idGjlL16ZaUUapo5eI/Cid4QJpt0 5CnWIWru9zPuAxQiur1/JUTIBAux4jN7qMFtfn/ucN5ljtHFqvAM/aP3yHeOTcNx pEA6pVJtNHM=JgYX -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce