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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3758 libgcrypt security and bug fix update 10 November 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libgcrypt Publisher: Red Hat Operating System: Red Hat Impact/Access: Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2021-33560 Reference: ESB-2021.3134 ESB-2021.2242 ESB-2021.2234 Original Bulletin: https://access.redhat.com/errata/RHSA-2021:4409 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: libgcrypt security and bug fix update Advisory ID: RHSA-2021:4409-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:4409 Issue date: 2021-11-09 CVE Names: CVE-2021-33560 ===================================================================== 1. Summary: An update for libgcrypt 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 BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64 3. Description: The libgcrypt library provides general-purpose implementations of various cryptographic algorithms. Security Fix(es): * libgcrypt: mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm (CVE-2021-33560) 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. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from 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/): 1970096 - CVE-2021-33560 libgcrypt: mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm 1976137 - Enable hardware optimizations in FIPS mode 6. Package List: Red Hat Enterprise Linux BaseOS (v. 8): Source: libgcrypt-1.8.5-6.el8.src.rpm aarch64: libgcrypt-1.8.5-6.el8.aarch64.rpm libgcrypt-debuginfo-1.8.5-6.el8.aarch64.rpm libgcrypt-debugsource-1.8.5-6.el8.aarch64.rpm libgcrypt-devel-1.8.5-6.el8.aarch64.rpm libgcrypt-devel-debuginfo-1.8.5-6.el8.aarch64.rpm ppc64le: libgcrypt-1.8.5-6.el8.ppc64le.rpm libgcrypt-debuginfo-1.8.5-6.el8.ppc64le.rpm libgcrypt-debugsource-1.8.5-6.el8.ppc64le.rpm libgcrypt-devel-1.8.5-6.el8.ppc64le.rpm libgcrypt-devel-debuginfo-1.8.5-6.el8.ppc64le.rpm s390x: libgcrypt-1.8.5-6.el8.s390x.rpm libgcrypt-debuginfo-1.8.5-6.el8.s390x.rpm libgcrypt-debugsource-1.8.5-6.el8.s390x.rpm libgcrypt-devel-1.8.5-6.el8.s390x.rpm libgcrypt-devel-debuginfo-1.8.5-6.el8.s390x.rpm x86_64: libgcrypt-1.8.5-6.el8.i686.rpm libgcrypt-1.8.5-6.el8.x86_64.rpm libgcrypt-debuginfo-1.8.5-6.el8.i686.rpm libgcrypt-debuginfo-1.8.5-6.el8.x86_64.rpm libgcrypt-debugsource-1.8.5-6.el8.i686.rpm libgcrypt-debugsource-1.8.5-6.el8.x86_64.rpm libgcrypt-devel-1.8.5-6.el8.i686.rpm libgcrypt-devel-1.8.5-6.el8.x86_64.rpm libgcrypt-devel-debuginfo-1.8.5-6.el8.i686.rpm libgcrypt-devel-debuginfo-1.8.5-6.el8.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-2021-33560 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/ 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 iQIVAwUBYYrc7dzjgjWX9erEAQjhNw//RiJ7fkdY/H3C+UpkC4DWmYu18qSY/x9B topoqO8ID7x7Nnj8K+pXqBGA9TyHjhtGC+vxjHtXBWgbM1yIR1bIVcSWvalsiiMZ gEGsv/MNWbjvC0qDMxpYTBy1+Sa5qv3yV+D1XHU1rEDF9huPu/maQikyy7O/y5vl MWAyIee6LLZf+mebVN6VwGAH8puAvc7GA1Aobrwh5bjNKoVVesT46Wj2+oLV/tKW PNuINOjFL7ujNhpmzlYEitcsuDOdFJnr+XsEmPZcnNB80D/jlEJd6KNe7fZnrEVP YFQIFMz1VsEbPLGhRDJAnUQlCimq7viO9p6XTMLOZQ0TeeIrvu6owRMskI6qXHgb +3JUAU8kePQXrdf3ROhShd3o6jLEA7qjlIWTCdb6Id1TrPurbcd+hOofvFb+MGNi oreK3cH87/0Gja5C4t9eKUcuiM2mu6XCklJ0FeWN1xeOpp5+rHY2zKPQZ2RQ2EQE ZScqE1JHiVZ7sHzDWmmtqBnk3B8LbjMfWg3dHBcTNy2fn5DHy7uHP/2jlVACRbe+ EONHSy1V1r3BV2JzrEu69EPp0lPZRbjm4CgLZ6/qwwmrpVNV0A3UBEVeVsmxkpM4 pqmVkwdqxTkEq8VUA3GQRjP8n/Fjm6D0MK+BwEVOmbPPY3V00BsPnL/4ZCdhWcVt bIa6gK7va4U= =Ldxd - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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