Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3886 gcc-toolset-10-binutils security update 16 November 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: gcc-toolset-10-binutils Publisher: Red Hat Operating System: Red Hat Impact/Access: Provide Misleading Information -- Existing Account Reduced Security -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-42574 Reference: ASB-2021.0229.2 ESB-2021.3843 ESB-2021.3842 ESB-2021.3841 Original Bulletin: https://access.redhat.com/errata/RHSA-2021:4649 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: gcc-toolset-10-binutils security update Advisory ID: RHSA-2021:4649-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:4649 Issue date: 2021-11-15 CVE Names: CVE-2021-42574 ===================================================================== 1. Summary: An update for gcc-toolset-10-binutils 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 Enterprise Linux AppStream (v. 8) - 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 "--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 AppStream (v. 8): Source: gcc-toolset-10-binutils-2.35-8.el8_5.6.src.rpm aarch64: gcc-toolset-10-binutils-2.35-8.el8_5.6.aarch64.rpm gcc-toolset-10-binutils-debuginfo-2.35-8.el8_5.6.aarch64.rpm gcc-toolset-10-binutils-devel-2.35-8.el8_5.6.aarch64.rpm ppc64le: gcc-toolset-10-binutils-2.35-8.el8_5.6.ppc64le.rpm gcc-toolset-10-binutils-debuginfo-2.35-8.el8_5.6.ppc64le.rpm gcc-toolset-10-binutils-devel-2.35-8.el8_5.6.ppc64le.rpm s390x: gcc-toolset-10-binutils-2.35-8.el8_5.6.s390x.rpm gcc-toolset-10-binutils-debuginfo-2.35-8.el8_5.6.s390x.rpm gcc-toolset-10-binutils-devel-2.35-8.el8_5.6.s390x.rpm x86_64: gcc-toolset-10-binutils-2.35-8.el8_5.6.x86_64.rpm gcc-toolset-10-binutils-debuginfo-2.35-8.el8_5.6.i686.rpm gcc-toolset-10-binutils-debuginfo-2.35-8.el8_5.6.x86_64.rpm gcc-toolset-10-binutils-devel-2.35-8.el8_5.6.i686.rpm gcc-toolset-10-binutils-devel-2.35-8.el8_5.6.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. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYZJx4NzjgjWX9erEAQi7Mg/8C+EFYgYwuWp6MLLB7rkvM56oomd0pn0/ 1FICg0onhz/TeHVep3q83NLFWauu4PVUAjbpaqA4y6g8bReldrn9wy+tao+QhWd+ vS+2y9xGHEhx3CmrRc3tChNPvCvaEqFxQIXEovsTbY3WreYQr7YWVGsmcc05DcuI oFsK6Xszl6kIA9WlT/HweeKDPJBq/KOzkNZg20UnqzH3dW21on8SkabbVZI+BRLO JcLl0y9JuqUF3/4n8ejTTonR15dGekuLlugU2r4KNTvtZxIhtuYDvKSM7QJtj+1Y 1EZJf1uGgGs9CrRTBC7jkSYjDxmFIWZLPrrB4yArMcTdL9ak95iHyfLsI2S0DTXQ o1uObMjRFzEESrUY1ZAaAwPV9X9fpwIysUhNHRma5dP3aaMB1dD8hJtpR6oI5pIe vai++eJiagGPHE9BoMZeska9PjdAf5MfwMaQ4rtErD9C1gwYgjE0h8lQNlRdNuKz 5dOgw5+VfGZpyH7i8NBFfZOcNwR/upxDDWOPVa/KcDGOtXam+YCtW7NBfVRspxqO p2eR5bp+RHSXW2ZO2++ibVdGioqcTv/pNqGjizEdXVkmhmXKLPxmpPHa0wkDn7tx CLp2JSAKUIEfMR8+7NLrZIZKppecjNOFd/AWkvkzQ3LWqUgUkx4hB+AywHZx4kD8 eDVs1OIfgiI= =/GSZ - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYZL8MuNLKJtyKPYoAQhb/RAAor0U9kD6cNnu/eKuByH+zjzADA17S6gi 41tOpgLYqNvhMot2dHegItZHRyMMMaBda0eRYs7/VXaUHCBoyB0/RIYXeAp4SET2 p2mLOfVyKoPFCmMvXOIlm1ZkgpIHrt7wF0M9WlbTCyqFXSI1FJSbWc277lXIuDNT 5kMRLxgAt7UK11nUUsOZQHNEBFmnu+lCGfCcC8Syb5ghqpbytgfFg0UHfu7w/7V+ PzD4+MDd+uzSilKl7YWXywewpzjbUMs9NfFMvifw0N0WJY9IuBmeEJxebl+Em08j 6IPPKRLUrq5S1T1GiPe2x84ZZ9tJ1Q5LWeqyaiDdh5cYP+YWJfBqkit2FGLfOpwy dbkmXAgBlN6t8flrRvSymlS264ZbHuuUpqJfaC/Ze2Wdm+dj1br7/J80vIps8qIk HFGAKEQYh0N5gyf2g+Kwnrhj90ylgVtQ0j4Ojv1oifVOiy+qMBNqqH08SIiZy7Gd OG/ltRrSYLJJtL7PrT2rShAkHtphcK+UKezXm1BMlQYNjhS3SpRYcPfPOBw8snFq yxdDbsf/Nhm3ar/KhaYHPZHGlKMwzWcwdZfmVZkOcwmU119GeLvkxuKQ6hBWu+26 a0Ff1a2xLWsqcTMIFIGi7SLgl9tlkp/HNd7y6AP42xe2jNEV2c2mlLjZzIOsyRu4 rwkUfSFP6qw= =S6aC -----END PGP SIGNATURE-----