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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3753 gnutls and nettle security, bug fix, and enhancement update 10 November 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: gnutls and nettle Publisher: Red Hat Operating System: Red Hat Impact/Access: Denial of Service -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2021-20232 CVE-2021-20231 CVE-2021-3580 Reference: ESB-2021.2600 ESB-2021.2224 ESB-2021.1029 Original Bulletin: https://access.redhat.com/errata/RHSA-2021:4451 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: gnutls and nettle security, bug fix, and enhancement update Advisory ID: RHSA-2021:4451-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:4451 Issue date: 2021-11-09 CVE Names: CVE-2021-3580 CVE-2021-20231 CVE-2021-20232 ===================================================================== 1. Summary: An update for gnutls and nettle 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 Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64 3. Description: The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS. 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. The following packages have been upgraded to a later upstream version: gnutls (3.6.16). (BZ#1956783) Security Fix(es): * nettle: Remote crash in RSA decryption via manipulated ciphertext (CVE-2021-3580) * gnutls: Use after free in client key_share extension (CVE-2021-20231) * gnutls: Use after free in client_send_params in lib/ext/pre_shared_key.c (CVE-2021-20232) 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/): 1776250 - p11tool do not reuse ID for certificate matching ECDSA private key when importing to PKCS#11 device 1908110 - gnutls update 3.6.14-7.el8_3 includes time BOMB in tests 1908334 - gnutls-serv doesn't listen on IPvN loopback addresses if there are no IPvN external addresses configured 1922275 - CVE-2021-20232 gnutls: Use after free in client_send_params in lib/ext/pre_shared_key.c 1922276 - CVE-2021-20231 gnutls: Use after free in client key_share extension 1965445 - SHA-1 CAs are rejected even if they are explicitly trusted 1967983 - CVE-2021-3580 nettle: Remote crash in RSA decryption via manipulated ciphertext 6. Package List: Red Hat Enterprise Linux AppStream (v. 8): aarch64: gnutls-c++-3.6.16-4.el8.aarch64.rpm gnutls-c++-debuginfo-3.6.16-4.el8.aarch64.rpm gnutls-dane-3.6.16-4.el8.aarch64.rpm gnutls-dane-debuginfo-3.6.16-4.el8.aarch64.rpm gnutls-debuginfo-3.6.16-4.el8.aarch64.rpm gnutls-debugsource-3.6.16-4.el8.aarch64.rpm gnutls-devel-3.6.16-4.el8.aarch64.rpm gnutls-utils-3.6.16-4.el8.aarch64.rpm gnutls-utils-debuginfo-3.6.16-4.el8.aarch64.rpm nettle-debuginfo-3.4.1-7.el8.aarch64.rpm nettle-debugsource-3.4.1-7.el8.aarch64.rpm nettle-devel-3.4.1-7.el8.aarch64.rpm ppc64le: gnutls-c++-3.6.16-4.el8.ppc64le.rpm gnutls-c++-debuginfo-3.6.16-4.el8.ppc64le.rpm gnutls-dane-3.6.16-4.el8.ppc64le.rpm gnutls-dane-debuginfo-3.6.16-4.el8.ppc64le.rpm gnutls-debuginfo-3.6.16-4.el8.ppc64le.rpm gnutls-debugsource-3.6.16-4.el8.ppc64le.rpm gnutls-devel-3.6.16-4.el8.ppc64le.rpm gnutls-utils-3.6.16-4.el8.ppc64le.rpm gnutls-utils-debuginfo-3.6.16-4.el8.ppc64le.rpm nettle-debuginfo-3.4.1-7.el8.ppc64le.rpm nettle-debugsource-3.4.1-7.el8.ppc64le.rpm nettle-devel-3.4.1-7.el8.ppc64le.rpm s390x: gnutls-c++-3.6.16-4.el8.s390x.rpm gnutls-c++-debuginfo-3.6.16-4.el8.s390x.rpm gnutls-dane-3.6.16-4.el8.s390x.rpm gnutls-dane-debuginfo-3.6.16-4.el8.s390x.rpm gnutls-debuginfo-3.6.16-4.el8.s390x.rpm gnutls-debugsource-3.6.16-4.el8.s390x.rpm gnutls-devel-3.6.16-4.el8.s390x.rpm gnutls-utils-3.6.16-4.el8.s390x.rpm gnutls-utils-debuginfo-3.6.16-4.el8.s390x.rpm nettle-debuginfo-3.4.1-7.el8.s390x.rpm nettle-debugsource-3.4.1-7.el8.s390x.rpm nettle-devel-3.4.1-7.el8.s390x.rpm x86_64: gnutls-c++-3.6.16-4.el8.i686.rpm gnutls-c++-3.6.16-4.el8.x86_64.rpm gnutls-c++-debuginfo-3.6.16-4.el8.i686.rpm gnutls-c++-debuginfo-3.6.16-4.el8.x86_64.rpm gnutls-dane-3.6.16-4.el8.i686.rpm gnutls-dane-3.6.16-4.el8.x86_64.rpm gnutls-dane-debuginfo-3.6.16-4.el8.i686.rpm gnutls-dane-debuginfo-3.6.16-4.el8.x86_64.rpm gnutls-debuginfo-3.6.16-4.el8.i686.rpm gnutls-debuginfo-3.6.16-4.el8.x86_64.rpm gnutls-debugsource-3.6.16-4.el8.i686.rpm gnutls-debugsource-3.6.16-4.el8.x86_64.rpm gnutls-devel-3.6.16-4.el8.i686.rpm gnutls-devel-3.6.16-4.el8.x86_64.rpm gnutls-utils-3.6.16-4.el8.x86_64.rpm gnutls-utils-debuginfo-3.6.16-4.el8.i686.rpm gnutls-utils-debuginfo-3.6.16-4.el8.x86_64.rpm nettle-debuginfo-3.4.1-7.el8.i686.rpm nettle-debuginfo-3.4.1-7.el8.x86_64.rpm nettle-debugsource-3.4.1-7.el8.i686.rpm nettle-debugsource-3.4.1-7.el8.x86_64.rpm nettle-devel-3.4.1-7.el8.i686.rpm nettle-devel-3.4.1-7.el8.x86_64.rpm Red Hat Enterprise Linux BaseOS (v. 8): Source: gnutls-3.6.16-4.el8.src.rpm nettle-3.4.1-7.el8.src.rpm aarch64: gnutls-3.6.16-4.el8.aarch64.rpm gnutls-c++-debuginfo-3.6.16-4.el8.aarch64.rpm gnutls-dane-debuginfo-3.6.16-4.el8.aarch64.rpm gnutls-debuginfo-3.6.16-4.el8.aarch64.rpm gnutls-debugsource-3.6.16-4.el8.aarch64.rpm gnutls-utils-debuginfo-3.6.16-4.el8.aarch64.rpm nettle-3.4.1-7.el8.aarch64.rpm nettle-debuginfo-3.4.1-7.el8.aarch64.rpm nettle-debugsource-3.4.1-7.el8.aarch64.rpm ppc64le: gnutls-3.6.16-4.el8.ppc64le.rpm gnutls-c++-debuginfo-3.6.16-4.el8.ppc64le.rpm gnutls-dane-debuginfo-3.6.16-4.el8.ppc64le.rpm gnutls-debuginfo-3.6.16-4.el8.ppc64le.rpm gnutls-debugsource-3.6.16-4.el8.ppc64le.rpm gnutls-utils-debuginfo-3.6.16-4.el8.ppc64le.rpm nettle-3.4.1-7.el8.ppc64le.rpm nettle-debuginfo-3.4.1-7.el8.ppc64le.rpm nettle-debugsource-3.4.1-7.el8.ppc64le.rpm s390x: gnutls-3.6.16-4.el8.s390x.rpm gnutls-c++-debuginfo-3.6.16-4.el8.s390x.rpm gnutls-dane-debuginfo-3.6.16-4.el8.s390x.rpm gnutls-debuginfo-3.6.16-4.el8.s390x.rpm gnutls-debugsource-3.6.16-4.el8.s390x.rpm gnutls-utils-debuginfo-3.6.16-4.el8.s390x.rpm nettle-3.4.1-7.el8.s390x.rpm nettle-debuginfo-3.4.1-7.el8.s390x.rpm nettle-debugsource-3.4.1-7.el8.s390x.rpm x86_64: gnutls-3.6.16-4.el8.i686.rpm gnutls-3.6.16-4.el8.x86_64.rpm gnutls-c++-debuginfo-3.6.16-4.el8.i686.rpm gnutls-c++-debuginfo-3.6.16-4.el8.x86_64.rpm gnutls-dane-debuginfo-3.6.16-4.el8.i686.rpm gnutls-dane-debuginfo-3.6.16-4.el8.x86_64.rpm gnutls-debuginfo-3.6.16-4.el8.i686.rpm gnutls-debuginfo-3.6.16-4.el8.x86_64.rpm gnutls-debugsource-3.6.16-4.el8.i686.rpm gnutls-debugsource-3.6.16-4.el8.x86_64.rpm gnutls-utils-debuginfo-3.6.16-4.el8.i686.rpm gnutls-utils-debuginfo-3.6.16-4.el8.x86_64.rpm nettle-3.4.1-7.el8.i686.rpm nettle-3.4.1-7.el8.x86_64.rpm nettle-debuginfo-3.4.1-7.el8.i686.rpm nettle-debuginfo-3.4.1-7.el8.x86_64.rpm nettle-debugsource-3.4.1-7.el8.i686.rpm nettle-debugsource-3.4.1-7.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-2021-3580 https://access.redhat.com/security/cve/CVE-2021-20231 https://access.redhat.com/security/cve/CVE-2021-20232 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 iQIVAwUBYYrd89zjgjWX9erEAQgvABAAk5lcKW4xz1CTb3A496iCBhayANX6Pp7v HMtFQSk6Naf/5dKhbsVjAci7DI3J2oWff3XldSCzS6fRkdgb0n0O9R4DcCHMpEAu yMsZ3UFfxt+lcdQzHhCdGcGTkeL895JJrGZLsIplTp5BAgAyxOMRJ3Kh1bTnvcT3 kfQfZT4Az2k3tG8bSRLiMPIT3Rd9vqxWBaHtXQGXpNTMz74RmydRentOrbkXXfmt jP+zXTA3UBp6zvzZoIsr5gaxfAzPadtriMQhr5wQNcveq2uhWdUnMuknQWgvb/Ci JproqBcqrGDfDts+EVmnvfwZeZvBetupy7EqiUGDWqosayDE1dPgdDMeUJAda7F2 TchdKCwWVe2c4bGLSN/VQw7PKJw94MUxd/1fbZpWA0FHeHHzxcy9d6zW1wbZ4jib 0hGGJPi2UmH4rIDbpH4gLxB/FFghLv3wNfzl5QVuRsrJDO+yYseh6tA0/N8BMQU1 X2OfbMYiDDr2ui1j87jj8Gtq1sYp7TzJk15/cFSfDCoRTRI5vE/POsWc169OO37q RnaE0MIiX0Re0V4548GmA5W/LeBlv/z06uvzSavZPHfIr4BY2O6zZHXeViW2dQLM E9QoYetu0hJ7t316P1Q4AZlzY4wr0wkUwtHDWkd9f7WgSYY9+OPQ2mfxgrcTEQw8 vqBF3aui7yY= =6kIz - -----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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