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Red Hat Security Advisory 2023-2792-01

Red Hat Security Advisory 2023-2792-01 - The Berkeley Internet Name Domain is an implementation of the Domain Name System protocols. BIND includes a DNS server ; a resolver library ; and tools for verifying that the DNS server is operating correctly. Issues addressed include a denial of service vulnerability.

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====================================================================
Red Hat Security Advisory

Synopsis: Moderate: bind9.16 security and bug fix update
Advisory ID: RHSA-2023:2792-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:2792
Issue date: 2023-05-16
CVE Names: CVE-2022-2795 CVE-2022-3094 CVE-2022-3736
CVE-2022-3924
====================================================================

  1. Summary:

An update for bind9.16 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.

  1. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64
Red Hat Enterprise Linux CRB (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

  1. 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: processing large delegations may severely degrade resolver
    performance (CVE-2022-2795)

  • bind: flooding with UPDATE requests may lead to DoS (CVE-2022-3094)

  • bind: sending specific queries to the resolver may cause a DoS
    (CVE-2022-3736)

  • bind: sending specific queries to the resolver may cause a DoS
    (CVE-2022-3924)

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 8.8 Release Notes linked from the References section.

  1. 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

  1. Bugs fixed (https://bugzilla.redhat.com/):

2115322 - bind9.16-dnssec-utils should be in AppStream repository
2128584 - CVE-2022-2795 bind: processing large delegations may severely degrade resolver performance
2164032 - CVE-2022-3094 bind: flooding with UPDATE requests may lead to DoS
2164038 - CVE-2022-3736 bind: sending specific queries to the resolver may cause a DoS
2164039 - CVE-2022-3924 bind: sending specific queries to the resolver may cause a DoS

  1. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
bind9.16-9.16.23-0.14.el8.src.rpm

aarch64:
bind9.16-9.16.23-0.14.el8.aarch64.rpm
bind9.16-chroot-9.16.23-0.14.el8.aarch64.rpm
bind9.16-debuginfo-9.16.23-0.14.el8.aarch64.rpm
bind9.16-debugsource-9.16.23-0.14.el8.aarch64.rpm
bind9.16-dnssec-utils-9.16.23-0.14.el8.aarch64.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.14.el8.aarch64.rpm
bind9.16-libs-9.16.23-0.14.el8.aarch64.rpm
bind9.16-libs-debuginfo-9.16.23-0.14.el8.aarch64.rpm
bind9.16-utils-9.16.23-0.14.el8.aarch64.rpm
bind9.16-utils-debuginfo-9.16.23-0.14.el8.aarch64.rpm

noarch:
bind9.16-license-9.16.23-0.14.el8.noarch.rpm
python3-bind9.16-9.16.23-0.14.el8.noarch.rpm

ppc64le:
bind9.16-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-chroot-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-debuginfo-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-debugsource-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-dnssec-utils-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-libs-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-libs-debuginfo-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-utils-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-utils-debuginfo-9.16.23-0.14.el8.ppc64le.rpm

s390x:
bind9.16-9.16.23-0.14.el8.s390x.rpm
bind9.16-chroot-9.16.23-0.14.el8.s390x.rpm
bind9.16-debuginfo-9.16.23-0.14.el8.s390x.rpm
bind9.16-debugsource-9.16.23-0.14.el8.s390x.rpm
bind9.16-dnssec-utils-9.16.23-0.14.el8.s390x.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.14.el8.s390x.rpm
bind9.16-libs-9.16.23-0.14.el8.s390x.rpm
bind9.16-libs-debuginfo-9.16.23-0.14.el8.s390x.rpm
bind9.16-utils-9.16.23-0.14.el8.s390x.rpm
bind9.16-utils-debuginfo-9.16.23-0.14.el8.s390x.rpm

x86_64:
bind9.16-9.16.23-0.14.el8.x86_64.rpm
bind9.16-chroot-9.16.23-0.14.el8.x86_64.rpm
bind9.16-debuginfo-9.16.23-0.14.el8.x86_64.rpm
bind9.16-debugsource-9.16.23-0.14.el8.x86_64.rpm
bind9.16-dnssec-utils-9.16.23-0.14.el8.x86_64.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.14.el8.x86_64.rpm
bind9.16-libs-9.16.23-0.14.el8.x86_64.rpm
bind9.16-libs-debuginfo-9.16.23-0.14.el8.x86_64.rpm
bind9.16-utils-9.16.23-0.14.el8.x86_64.rpm
bind9.16-utils-debuginfo-9.16.23-0.14.el8.x86_64.rpm

Red Hat Enterprise Linux CRB (v. 8):

aarch64:
bind9.16-debuginfo-9.16.23-0.14.el8.aarch64.rpm
bind9.16-debugsource-9.16.23-0.14.el8.aarch64.rpm
bind9.16-devel-9.16.23-0.14.el8.aarch64.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.14.el8.aarch64.rpm
bind9.16-libs-debuginfo-9.16.23-0.14.el8.aarch64.rpm
bind9.16-utils-debuginfo-9.16.23-0.14.el8.aarch64.rpm

noarch:
bind9.16-doc-9.16.23-0.14.el8.noarch.rpm

ppc64le:
bind9.16-debuginfo-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-debugsource-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-devel-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-libs-debuginfo-9.16.23-0.14.el8.ppc64le.rpm
bind9.16-utils-debuginfo-9.16.23-0.14.el8.ppc64le.rpm

s390x:
bind9.16-debuginfo-9.16.23-0.14.el8.s390x.rpm
bind9.16-debugsource-9.16.23-0.14.el8.s390x.rpm
bind9.16-devel-9.16.23-0.14.el8.s390x.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.14.el8.s390x.rpm
bind9.16-libs-debuginfo-9.16.23-0.14.el8.s390x.rpm
bind9.16-utils-debuginfo-9.16.23-0.14.el8.s390x.rpm

x86_64:
bind9.16-debuginfo-9.16.23-0.14.el8.i686.rpm
bind9.16-debuginfo-9.16.23-0.14.el8.x86_64.rpm
bind9.16-debugsource-9.16.23-0.14.el8.i686.rpm
bind9.16-debugsource-9.16.23-0.14.el8.x86_64.rpm
bind9.16-devel-9.16.23-0.14.el8.i686.rpm
bind9.16-devel-9.16.23-0.14.el8.x86_64.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.14.el8.i686.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.14.el8.x86_64.rpm
bind9.16-libs-9.16.23-0.14.el8.i686.rpm
bind9.16-libs-debuginfo-9.16.23-0.14.el8.i686.rpm
bind9.16-libs-debuginfo-9.16.23-0.14.el8.x86_64.rpm
bind9.16-utils-debuginfo-9.16.23-0.14.el8.i686.rpm
bind9.16-utils-debuginfo-9.16.23-0.14.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/

  1. References:

https://access.redhat.com/security/cve/CVE-2022-2795
https://access.redhat.com/security/cve/CVE-2022-3094
https://access.redhat.com/security/cve/CVE-2022-3736
https://access.redhat.com/security/cve/CVE-2022-3924
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.8_release_notes/index

  1. Contact:

The Red Hat security contact is [email protected]. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2023 Red Hat, Inc.
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An update for bind9.16 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.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2795: A flaw was found in bind. When flooding the target resolver with special queries, an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service. * CVE-2022-3094: A flaw was found in Bind, where sending a flood of dynamic DNS updates may cause named to allocate large am...

RHSA-2023:2261: Red Hat Security Advisory: bind security and bug fix update

An update for bind is now available for Red Hat Enterprise Linux 9. 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.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2795: A flaw was found in bind. When flooding the target resolver with special queries, an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service. * CVE-2022-3094: A flaw was found in Bind, where sending a flood of dynamic DNS updates may cause named to allocate large amount...

RHSA-2023:2261: Red Hat Security Advisory: bind security and bug fix update

An update for bind is now available for Red Hat Enterprise Linux 9. 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.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2795: A flaw was found in bind. When flooding the target resolver with special queries, an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service. * CVE-2022-3094: A flaw was found in Bind, where sending a flood of dynamic DNS updates may cause named to allocate large amount...

RHSA-2023:2261: Red Hat Security Advisory: bind security and bug fix update

An update for bind is now available for Red Hat Enterprise Linux 9. 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.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2795: A flaw was found in bind. When flooding the target resolver with special queries, an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service. * CVE-2022-3094: A flaw was found in Bind, where sending a flood of dynamic DNS updates may cause named to allocate large amount...

RHSA-2023:2261: Red Hat Security Advisory: bind security and bug fix update

An update for bind is now available for Red Hat Enterprise Linux 9. 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.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2795: A flaw was found in bind. When flooding the target resolver with special queries, an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service. * CVE-2022-3094: A flaw was found in Bind, where sending a flood of dynamic DNS updates may cause named to allocate large amount...

ISC Releases Security Patches for New BIND DNS Software Vulnerabilities

The Internet Systems Consortium (ISC) has released patches to address multiple security vulnerabilities in the Berkeley Internet Name Domain (BIND) 9 Domain Name System (DNS) software suite that could lead to a denial-of-service (DoS) condition. "A remote attacker could exploit these vulnerabilities to potentially cause denial-of-service conditions and system failures," the U.S. Cybersecurity

ISC Releases Security Patches for New BIND DNS Software Vulnerabilities

The Internet Systems Consortium (ISC) has released patches to address multiple security vulnerabilities in the Berkeley Internet Name Domain (BIND) 9 Domain Name System (DNS) software suite that could lead to a denial-of-service (DoS) condition. "A remote attacker could exploit these vulnerabilities to potentially cause denial-of-service conditions and system failures," the U.S. Cybersecurity

ISC Releases Security Patches for New BIND DNS Software Vulnerabilities

The Internet Systems Consortium (ISC) has released patches to address multiple security vulnerabilities in the Berkeley Internet Name Domain (BIND) 9 Domain Name System (DNS) software suite that could lead to a denial-of-service (DoS) condition. "A remote attacker could exploit these vulnerabilities to potentially cause denial-of-service conditions and system failures," the U.S. Cybersecurity

Debian Security Advisory 5329-1

Debian Linux Security Advisory 5329-1 - Several vulnerabilities were discovered in BIND, a DNS server implementation, which may result in denial of service against named.

Debian Security Advisory 5329-1

Debian Linux Security Advisory 5329-1 - Several vulnerabilities were discovered in BIND, a DNS server implementation, which may result in denial of service against named.

Debian Security Advisory 5329-1

Debian Linux Security Advisory 5329-1 - Several vulnerabilities were discovered in BIND, a DNS server implementation, which may result in denial of service against named.

CVE-2022-3924: CVE-2022-3924: named configured to answer from stale cache may termina

This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option `stale-answer-client-timeout`, configured with a value greater than zero. If the resolver receives many queries that require recursion, there will be a corresponding increase in the number of clients that are waiting for recursion to complete. If there are sufficient clients already waiting when a new client query is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure. This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1.

CVE-2022-3094: CVE-2022-3094: An UPDATE message flood may cause named to exhaust all

Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has been exploited. Memory is allocated prior to the checking of access permissions (ACLs) and is retained during the processing of a dynamic update from a client whose access credentials are accepted. Memory allocated to clients that are not permitted to send updates is released immediately upon rejection. The scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone changes. If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only likely to be possible to degrade or stop `named` by sending a flood of unaccepted dynamic updates comparable in magnitude to a query flood intended to achieve the same detrimental outcome. BIND 9.11 and earlier branches are also affected, but through exhaustion of int...

CVE-2022-3736: CVE-2022-3736: named configured to answer from stale cache may termina

BIND 9 resolver can crash when stale cache and stale answers are enabled, option `stale-answer-client-timeout` is set to a positive integer, and the resolver receives an RRSIG query. This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1.

Ubuntu Security Notice USN-5827-1

Ubuntu Security Notice 5827-1 - Rob Schulhof discovered that Bind incorrectly handled a large number of UPDATE messages. A remote attacker could possibly use this issue to cause Bind to consume resources, resulting in a denial of service. Borja Marcos discovered that Bind incorrectly handled certain RRSIG queries. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 22.10.

Ubuntu Security Notice USN-5827-1

Ubuntu Security Notice 5827-1 - Rob Schulhof discovered that Bind incorrectly handled a large number of UPDATE messages. A remote attacker could possibly use this issue to cause Bind to consume resources, resulting in a denial of service. Borja Marcos discovered that Bind incorrectly handled certain RRSIG queries. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 22.10.

Ubuntu Security Notice USN-5827-1

Ubuntu Security Notice 5827-1 - Rob Schulhof discovered that Bind incorrectly handled a large number of UPDATE messages. A remote attacker could possibly use this issue to cause Bind to consume resources, resulting in a denial of service. Borja Marcos discovered that Bind incorrectly handled certain RRSIG queries. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 22.10.

Red Hat Security Advisory 2023-0402-01

Red Hat Security Advisory 2023-0402-01 - An update for bind is now available for Red Hat Enterprise Linux 7.

RHSA-2023:0402: Red Hat Security Advisory: bind security update

An update for bind is now available for Red Hat Enterprise Linux 7. 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.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2021-25220: bind: DNS forwarders - cache poisoning vulnerability * CVE-2022-2795: bind: processing large delegations may severely degrade resolver performance

Scanvus now supports Vulners and Vulns.io VM Linux vulnerability detection APIs

Hello everyone! Great news for my open source Scanvus project! You can now perform vulnerability checks on Linux hosts and docker images not only using the Vulners.com API, but also with the Vulns.io VM API. It’s especially nice that all the code to support the new API was written and contributed by colleagues from Vulns.io. […]

Ubuntu Security Notice USN-5626-2

Ubuntu Security Notice 5626-2 - USN-5626-1 fixed several vulnerabilities in Bind. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Yehuda Afek, Anat Bremler-Barr, and Shani Stajnrod discovered that Bind incorrectly handled large delegations. A remote attacker could possibly use this issue to reduce performance, leading to a denial of service.

Ubuntu Security Notice USN-5626-1

Ubuntu Security Notice 5626-1 - Yehuda Afek, Anat Bremler-Barr, and Shani Stajnrod discovered that Bind incorrectly handled large delegations. A remote attacker could possibly use this issue to reduce performance, leading to a denial of service. It was discovered that Bind incorrectly handled statistics requests. A remote attacker could possibly use this issue to obtain sensitive memory contents, or cause a denial of service. This issue only affected Ubuntu 22.04 LTS.

CVE-2022-2795: CVE-2022-2795: Processing large delegations may severely degrade resolver performance - Security Advisories

By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service.

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