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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.2418 nettle security update 16 July 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: nettle Publisher: Red Hat Operating System: Red Hat Impact/Access: Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2021-20305 Reference: ESB-2021.2232 ESB-2021.2228 ESB-2021.2187 ESB-2021.2160 ESB-2021.1994 Original Bulletin: https://access.redhat.com/errata/RHSA-2021:2758 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: nettle security update Advisory ID: RHSA-2021:2758-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:2758 Issue date: 2021-07-15 CVE Names: CVE-2021-20305 ===================================================================== 1. Summary: An update for nettle is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. 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. 7.4) - x86_64 Red Hat Enterprise Linux Server E4S (v. 7.4) - ppc64le, x86_64 Red Hat Enterprise Linux Server TUS (v. 7.4) - x86_64 3. Description: Nettle is a cryptographic library that is designed to fit easily in almost any context: In crypto toolkits for object-oriented languages, such as C++, Python, or Pike, in applications like LSH or GNUPG, or even in kernel space. Security Fix(es): * nettle: Out of bounds memory access in signature verification (CVE-2021-20305) 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/): 1942533 - CVE-2021-20305 nettle: Out of bounds memory access in signature verification 6. Package List: Red Hat Enterprise Linux Server AUS (v. 7.4): Source: nettle-2.7.1-9.el7_4.src.rpm x86_64: nettle-2.7.1-9.el7_4.i686.rpm nettle-2.7.1-9.el7_4.x86_64.rpm nettle-debuginfo-2.7.1-9.el7_4.i686.rpm nettle-debuginfo-2.7.1-9.el7_4.x86_64.rpm nettle-devel-2.7.1-9.el7_4.i686.rpm nettle-devel-2.7.1-9.el7_4.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.4): Source: nettle-2.7.1-9.el7_4.src.rpm ppc64le: nettle-2.7.1-9.el7_4.ppc64le.rpm nettle-debuginfo-2.7.1-9.el7_4.ppc64le.rpm nettle-devel-2.7.1-9.el7_4.ppc64le.rpm x86_64: nettle-2.7.1-9.el7_4.i686.rpm nettle-2.7.1-9.el7_4.x86_64.rpm nettle-debuginfo-2.7.1-9.el7_4.i686.rpm nettle-debuginfo-2.7.1-9.el7_4.x86_64.rpm nettle-devel-2.7.1-9.el7_4.i686.rpm nettle-devel-2.7.1-9.el7_4.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.4): Source: nettle-2.7.1-9.el7_4.src.rpm x86_64: nettle-2.7.1-9.el7_4.i686.rpm nettle-2.7.1-9.el7_4.x86_64.rpm nettle-debuginfo-2.7.1-9.el7_4.i686.rpm nettle-debuginfo-2.7.1-9.el7_4.x86_64.rpm nettle-devel-2.7.1-9.el7_4.i686.rpm nettle-devel-2.7.1-9.el7_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-2021-20305 https://access.redhat.com/security/updates/classification/#important 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 iQIVAwUBYPCGZtzjgjWX9erEAQgaQQ//UVjg5ptMbKk1ULc/iUcjXPyoFMXMg+Ta YNd6429vOJ5/NhsaiIyYrJZE01dVtOVBtwqGr88KJD5kqAyBA0eLOxzut7thXHdI 7kTmJ90TxxljM7l+w8kNzmHuln20jhCwHtCsqRESfOLsaL9NApyaUfPutG4dYlzw Wo7pHOtxcHAslrN05LdxSSWDfIbha+GrtRXVzh+1jxJnmHZV0AJENDnp4SxB2GN+ Jw7+jaE5B9Q4M2lQexnUWDcXS4HeigOLn+iNfOtVa8Q2m2pwxUf8dKVefQJA5jZy WVFzsrxJZQTKoEINtPFFnUL0utI8A6HhC1Si6xi7kJUE/1kQqzRaLDqydStyrEZd AWuAScwu+jclaNKaCoZE1cfFlRIMMUYxVOZUGAGw5KYiEQI2tNe9xk+Wg94cWkP2 22RbX/NEbeYknJiUAbt8jSx4wX/Juv3VUrL8ya5IlUJrnZ6M8r+ZEEXra1HlUAfJ GfpZKAxaG0AKXVaaGNCiwbYbUuuyh1H6+/JIn9k4pa5YJjwnN384vfDCYoZVckdS o40jzdN2kYmgJLweK6/KBeI5IZAoXnOrHFwwFsKPxaaJSYjfOteNHvRCuX0apYYQ yLtY1NiSHYRlZ50huVM9ZHhNzPOQOaR9GhZ1zSYtRjhF+Z80bQQEXwC7yQHA1ORE 548n7psxtRE= =/jmk - -----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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