Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.2460 glibc security update 21 July 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: glibc Publisher: Red Hat Operating System: Red Hat Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-29573 Reference: ESB-2021.1236 ESB-2021.0868 ESB-2021.0728 ESB-2021.0373 Original Bulletin: https://access.redhat.com/errata/RHSA-2021:2813 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: glibc security update Advisory ID: RHSA-2021:2813-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:2813 Issue date: 2021-07-20 CVE Names: CVE-2020-29573 ===================================================================== 1. Summary: An update for glibc 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 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 Server AUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server E4S (v. 7.4) - ppc64le, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server Optional E4S (v. 7.4) - ppc64le, x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server TUS (v. 7.4) - x86_64 3. Description: The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. Security Fix(es): * glibc: stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern (CVE-2020-29573) 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 For the update to take effect, all services linked to the glibc library must be restarted, or the system rebooted. 5. Bugs fixed (https://bugzilla.redhat.com/): 1905213 - CVE-2020-29573 glibc: stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern 6. Package List: Red Hat Enterprise Linux Server AUS (v. 7.4): Source: glibc-2.17-196.el7_4.4.src.rpm x86_64: glibc-2.17-196.el7_4.4.i686.rpm glibc-2.17-196.el7_4.4.x86_64.rpm glibc-common-2.17-196.el7_4.4.x86_64.rpm glibc-debuginfo-2.17-196.el7_4.4.i686.rpm glibc-debuginfo-2.17-196.el7_4.4.x86_64.rpm glibc-debuginfo-common-2.17-196.el7_4.4.i686.rpm glibc-debuginfo-common-2.17-196.el7_4.4.x86_64.rpm glibc-devel-2.17-196.el7_4.4.i686.rpm glibc-devel-2.17-196.el7_4.4.x86_64.rpm glibc-headers-2.17-196.el7_4.4.x86_64.rpm glibc-utils-2.17-196.el7_4.4.x86_64.rpm nscd-2.17-196.el7_4.4.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.4): Source: glibc-2.17-196.el7_4.4.src.rpm ppc64le: glibc-2.17-196.el7_4.4.ppc64le.rpm glibc-common-2.17-196.el7_4.4.ppc64le.rpm glibc-debuginfo-2.17-196.el7_4.4.ppc64le.rpm glibc-debuginfo-common-2.17-196.el7_4.4.ppc64le.rpm glibc-devel-2.17-196.el7_4.4.ppc64le.rpm glibc-headers-2.17-196.el7_4.4.ppc64le.rpm glibc-utils-2.17-196.el7_4.4.ppc64le.rpm nscd-2.17-196.el7_4.4.ppc64le.rpm x86_64: glibc-2.17-196.el7_4.4.i686.rpm glibc-2.17-196.el7_4.4.x86_64.rpm glibc-common-2.17-196.el7_4.4.x86_64.rpm glibc-debuginfo-2.17-196.el7_4.4.i686.rpm glibc-debuginfo-2.17-196.el7_4.4.x86_64.rpm glibc-debuginfo-common-2.17-196.el7_4.4.i686.rpm glibc-debuginfo-common-2.17-196.el7_4.4.x86_64.rpm glibc-devel-2.17-196.el7_4.4.i686.rpm glibc-devel-2.17-196.el7_4.4.x86_64.rpm glibc-headers-2.17-196.el7_4.4.x86_64.rpm glibc-utils-2.17-196.el7_4.4.x86_64.rpm nscd-2.17-196.el7_4.4.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.4): Source: glibc-2.17-196.el7_4.4.src.rpm x86_64: glibc-2.17-196.el7_4.4.i686.rpm glibc-2.17-196.el7_4.4.x86_64.rpm glibc-common-2.17-196.el7_4.4.x86_64.rpm glibc-debuginfo-2.17-196.el7_4.4.i686.rpm glibc-debuginfo-2.17-196.el7_4.4.x86_64.rpm glibc-debuginfo-common-2.17-196.el7_4.4.i686.rpm glibc-debuginfo-common-2.17-196.el7_4.4.x86_64.rpm glibc-devel-2.17-196.el7_4.4.i686.rpm glibc-devel-2.17-196.el7_4.4.x86_64.rpm glibc-headers-2.17-196.el7_4.4.x86_64.rpm glibc-utils-2.17-196.el7_4.4.x86_64.rpm nscd-2.17-196.el7_4.4.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 7.4): x86_64: glibc-debuginfo-2.17-196.el7_4.4.i686.rpm glibc-debuginfo-2.17-196.el7_4.4.x86_64.rpm glibc-debuginfo-common-2.17-196.el7_4.4.i686.rpm glibc-debuginfo-common-2.17-196.el7_4.4.x86_64.rpm glibc-static-2.17-196.el7_4.4.i686.rpm glibc-static-2.17-196.el7_4.4.x86_64.rpm Red Hat Enterprise Linux Server Optional E4S (v. 7.4): ppc64le: glibc-debuginfo-2.17-196.el7_4.4.ppc64le.rpm glibc-debuginfo-common-2.17-196.el7_4.4.ppc64le.rpm glibc-static-2.17-196.el7_4.4.ppc64le.rpm x86_64: glibc-debuginfo-2.17-196.el7_4.4.i686.rpm glibc-debuginfo-2.17-196.el7_4.4.x86_64.rpm glibc-debuginfo-common-2.17-196.el7_4.4.i686.rpm glibc-debuginfo-common-2.17-196.el7_4.4.x86_64.rpm glibc-static-2.17-196.el7_4.4.i686.rpm glibc-static-2.17-196.el7_4.4.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 7.4): x86_64: glibc-debuginfo-2.17-196.el7_4.4.i686.rpm glibc-debuginfo-2.17-196.el7_4.4.x86_64.rpm glibc-debuginfo-common-2.17-196.el7_4.4.i686.rpm glibc-debuginfo-common-2.17-196.el7_4.4.x86_64.rpm glibc-static-2.17-196.el7_4.4.i686.rpm glibc-static-2.17-196.el7_4.4.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-2020-29573 https://access.redhat.com/security/updates/classification/#moderate 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 iQIVAwUBYPc9VdzjgjWX9erEAQgBng//QULcP1RirNzyO8JQ02McwOa/OwLW5Mzz 8Mil7SlGRnfWL6zQJcbcB4/wZfBc2fBZ/+Uv45lQdqBof8bbRx79XvR5pJnzLTm/ JsuyICGPT/xGZu67B8LnJ+4D1GtFJ97a3wxvh09LQ2u2Mqi4bw6Lo9TOGQK+FG9P V4sC80BMI5wZpLlmhqxxkdIpUcDhsMxCi/9nN4K4qvqZa7lVC3HLSTjOHn2gVqXm JwLllDCqTtr7/9b2YQ5cdpeeCkHTxLB6jTwk+mRxJx7gyrjwdW975cVKp+gncsKC j3G2zPhNkqPpvuLGe4C+DMHByLj4NuAPsbh3ugnduYJ6dTldiaw0TboaXnvOxh7X g80Rcl9h3YzC1V4rNumTuSPdqr2hoW4FRqthqy+CvJqOqR7mytjondCXjhr+4aX9 h1tyFFgk/HT8+pffYpa8ZFbTpmJ6grQ0TyRzhpR6tJDQwh9DzaqvHALj9p90kp4u p3k77cKaGK6KBs9l1LZDx5py1V8l0GoAlTY32RrDkDAacvimjTp9Zg/WKSgHyXL0 VbGhr3XfvjqVcPuOIuTkeSSEjJpH5chtBM+YSFYE2QktyV+ZxagPzSMOW877JFBX U78rMWNL629PQrAsComkYddlRWJMGfFZiqJQpYMwFbMzKtC1prOCFdWlEGBmT0kT EqamwuaWnQU= =zrNh - -----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 iQIVAwUBYPewJONLKJtyKPYoAQifBBAAsTTAha/L+rNObzu7lx0K4orKopcIReqz DkaBzA/4HcvBTRZuD2w3lVSZJNxxVG+//ieXyGa5g6HhKMMf5Ho9v5RuCHMC6snQ uMzv11GNs0wD/NtO1E2z+u123Gsh1eoc95OTn5qqYJZzVGa72yu9yzw8hKfaZMrq ZrgG7HwIv9s88iJfX51U5WWdZXGx7gvQYK2QxGyjgHpY/2D0ozX67yutaWoU6Czg 4DIusfPh/jlLkmNum+paYyGRmUPo5pBN6GGIxFTHyiFC3CVmsjVPFTgmPa/Z+CIn AvVme9fDqOhFDXPdQp3Jci+5dRMC29n2dcSD4KdAxhd1AYNVKiVFEc0lJIPDhRl4 cvCxkRu0XuKnDi6CGLVsFkXzGUnmNLIJe9mWms0PtAUgqegBMKBivpG2saO9BC0q yIKOIc0tzDEqO+jAZUJOgFpBXU5vjzUDZWGjXBEVcrI8cKonrHv+85mQWKsGiAdw iiOASB3fEDh3Kp0qBxs0wLynpu1Mu23nh05ERaYFsgYYE3M4/biDhsMKZMWb4Wkm tMxPJrM45wFewmVrygc/jAG8qnl9eBlE9/GuXc3u8Wwxo9EbZtU9uX/nfyV9rLJ9 nka3WnA2dG4bjnlL6Zh8NmWS2Y49J5+w8JxJjuRkGUldCRZzy+R9nv9lyswlS156 ukPTHL+exME= =3vlH -----END PGP SIGNATURE-----