drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Denial of Service in bind
Name: |
Denial of Service in bind |
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ID: |
RHSA-2021:1468-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Enterprise Linux |
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Datum: |
Do, 29. April 2021, 22:29 |
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Referenzen: |
https://access.redhat.com/security/cve/CVE-2021-25215 |
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Applikationen: |
BIND |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
===================================================================== Red Hat Security Advisory
Synopsis: Important: bind security update Advisory ID: RHSA-2021:1468-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:1468 Issue date: 2021-04-29 CVE Names: CVE-2021-25215 =====================================================================
1. Summary:
An update for bind is now available for Red Hat Enterprise Linux 6 Extended Lifecycle Support.
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 (v. 6 ELS) - i386, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6 ELS) - i386, s390x, x86_64
3. Description:
The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.
Security Fix(es):
* bind: An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself (CVE-2021-25215)
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
After installing the update, the BIND daemon (named) will be restarted automatically.
5. Bugs fixed (https://bugzilla.redhat.com/):
1953857 - CVE-2021-25215 bind: An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself
6. Package List:
Red Hat Enterprise Linux Server (v. 6 ELS):
Source: bind-9.8.2-0.68.rc1.el6_10.11.src.rpm
i386: bind-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-chroot-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-libs-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-utils-9.8.2-0.68.rc1.el6_10.11.i686.rpm
s390x: bind-9.8.2-0.68.rc1.el6_10.11.s390x.rpm bind-chroot-9.8.2-0.68.rc1.el6_10.11.s390x.rpm bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.s390.rpm bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.s390x.rpm bind-libs-9.8.2-0.68.rc1.el6_10.11.s390.rpm bind-libs-9.8.2-0.68.rc1.el6_10.11.s390x.rpm bind-utils-9.8.2-0.68.rc1.el6_10.11.s390x.rpm
x86_64: bind-9.8.2-0.68.rc1.el6_10.11.x86_64.rpm bind-chroot-9.8.2-0.68.rc1.el6_10.11.x86_64.rpm bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.x86_64.rpm bind-libs-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-libs-9.8.2-0.68.rc1.el6_10.11.x86_64.rpm bind-utils-9.8.2-0.68.rc1.el6_10.11.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6 ELS):
i386: bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-devel-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-sdb-9.8.2-0.68.rc1.el6_10.11.i686.rpm
s390x: bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.s390.rpm bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.s390x.rpm bind-devel-9.8.2-0.68.rc1.el6_10.11.s390.rpm bind-devel-9.8.2-0.68.rc1.el6_10.11.s390x.rpm bind-sdb-9.8.2-0.68.rc1.el6_10.11.s390x.rpm
x86_64: bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-debuginfo-9.8.2-0.68.rc1.el6_10.11.x86_64.rpm bind-devel-9.8.2-0.68.rc1.el6_10.11.i686.rpm bind-devel-9.8.2-0.68.rc1.el6_10.11.x86_64.rpm bind-sdb-9.8.2-0.68.rc1.el6_10.11.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-2021-25215 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/
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