Vulnerability from csaf_suse
Published
2021-05-04 06:34
Modified
2021-05-04 06:34
Summary
Security update for bind
Notes
Title of the patch
Security update for bind
Description of the patch
This update for bind fixes the following issues:
- CVE-2021-25214: Fixed a broken inbound incremental zone update (IXFR) which could have caused named to terminate unexpectedly (bsc#1185345).
- CVE-2021-25215: Fixed an assertion check which could have failed while answering queries for DNAME records that required the DNAME to be processed to resolve itself (bsc#1185345).
- CVE-2021-25216: Fixed an issue where policy negotiation can be targeted by a buffer overflow attack (bsc#1185345).
Patchnames
sleposp3-bind-14714,slessp4-bind-14714
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
{ document: { aggregate_severity: { namespace: "https://www.suse.com/support/security/rating/", text: "important", }, category: "csaf_security_advisory", csaf_version: "2.0", distribution: { text: "Copyright 2024 SUSE LLC. All rights reserved.", tlp: { label: "WHITE", url: "https://www.first.org/tlp/", }, }, lang: "en", notes: [ { category: "summary", text: "Security update for bind", title: "Title of the patch", }, { category: "description", text: "This update for bind fixes the following issues:\n\n- CVE-2021-25214: Fixed a broken inbound incremental zone update (IXFR) which could have caused named to terminate unexpectedly (bsc#1185345).\n- CVE-2021-25215: Fixed an assertion check which could have failed while answering queries for DNAME records that required the DNAME to be processed to resolve itself (bsc#1185345).\n- CVE-2021-25216: Fixed an issue where policy negotiation can be targeted by a buffer overflow attack (bsc#1185345).\n", title: "Description of the patch", }, { category: "details", text: "sleposp3-bind-14714,slessp4-bind-14714", title: "Patchnames", }, { category: "legal_disclaimer", text: "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).", title: "Terms of use", }, ], publisher: { category: "vendor", contact_details: "https://www.suse.com/support/security/contact/", name: "SUSE Product Security Team", namespace: "https://www.suse.com/", }, references: [ { category: "external", summary: "SUSE ratings", url: "https://www.suse.com/support/security/rating/", }, { category: "self", summary: "URL of this CSAF notice", url: "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2021_14714-1.json", }, { category: "self", summary: "URL for SUSE-SU-2021:14714-1", url: "https://www.suse.com/support/update/announcement/2021/suse-su-202114714-1/", }, { category: "self", summary: "E-Mail link for SUSE-SU-2021:14714-1", url: "https://lists.suse.com/pipermail/sle-security-updates/2021-May/008726.html", }, { category: "self", summary: "SUSE Bug 1185345", url: "https://bugzilla.suse.com/1185345", }, { category: "self", summary: "SUSE CVE CVE-2021-25214 page", url: "https://www.suse.com/security/cve/CVE-2021-25214/", }, { category: "self", summary: "SUSE CVE CVE-2021-25215 page", url: "https://www.suse.com/security/cve/CVE-2021-25215/", }, { category: "self", summary: "SUSE CVE CVE-2021-25216 page", url: "https://www.suse.com/security/cve/CVE-2021-25216/", }, ], title: "Security update for bind", tracking: { current_release_date: "2021-05-04T06:34:54Z", generator: { date: "2021-05-04T06:34:54Z", engine: { name: "cve-database.git:bin/generate-csaf.pl", version: "1", }, }, id: "SUSE-SU-2021:14714-1", initial_release_date: "2021-05-04T06:34:54Z", revision_history: [ { date: "2021-05-04T06:34:54Z", number: "1", summary: "Current version", }, ], status: "final", version: "1", }, }, product_tree: { branches: [ { branches: [ { branches: [ { category: "product_version", name: "bind-9.9.6P1-0.51.26.1.i586", product: { name: "bind-9.9.6P1-0.51.26.1.i586", product_id: "bind-9.9.6P1-0.51.26.1.i586", }, }, { category: "product_version", name: "bind-chrootenv-9.9.6P1-0.51.26.1.i586", product: { name: 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Enterprise Server 11 SP4-LTSS", }, { category: "default_component_of", full_product_name: { name: "bind-utils-9.9.6P1-0.51.26.1.x86_64 as component of SUSE Linux Enterprise Server 11 SP4-LTSS", product_id: "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-utils-9.9.6P1-0.51.26.1.x86_64", }, product_reference: "bind-utils-9.9.6P1-0.51.26.1.x86_64", relates_to_product_reference: "SUSE Linux Enterprise Server 11 SP4-LTSS", }, ], }, vulnerabilities: [ { cve: "CVE-2021-25214", ids: [ { system_name: "SUSE CVE Page", text: "https://www.suse.com/security/cve/CVE-2021-25214", }, ], notes: [ { category: "general", text: "In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.", title: "CVE description", }, ], product_status: { recommended: [ "SUSE Linux Enterprise Point of Sale 11 SP3:bind-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-chrootenv-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-devel-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-doc-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-libs-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-utils-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.ppc64", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.s390x", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.x86_64", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-chrootenv-9.9.6P1-0.51.26.1.i586", 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9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.", title: "CVE description", }, ], product_status: { recommended: [ "SUSE Linux Enterprise Point of Sale 11 SP3:bind-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-chrootenv-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-devel-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-doc-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-libs-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-utils-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.ppc64", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.s390x", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.x86_64", "SUSE Linux Enterprise 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{ category: "external", summary: "SUSE Bug 1199298 for CVE-2021-25215", url: "https://bugzilla.suse.com/1199298", }, { category: "external", summary: "SUSE Bug 1225626 for CVE-2021-25215", url: "https://bugzilla.suse.com/1225626", }, ], remediations: [ { category: "vendor_fix", details: "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n", product_ids: [ "SUSE Linux Enterprise Point of Sale 11 SP3:bind-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-chrootenv-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-devel-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-doc-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-libs-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-utils-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.i586", "SUSE Linux 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SP4-LTSS:bind-utils-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-utils-9.9.6P1-0.51.26.1.ppc64", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-utils-9.9.6P1-0.51.26.1.s390x", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-utils-9.9.6P1-0.51.26.1.x86_64", ], }, ], threats: [ { category: "impact", date: "2021-05-04T06:34:54Z", details: "important", }, ], title: "CVE-2021-25215", }, { cve: "CVE-2021-25216", ids: [ { system_name: "SUSE CVE Page", text: "https://www.suse.com/security/cve/CVE-2021-25216", }, ], notes: [ { category: "general", text: "In BIND 9.5.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.11.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch, BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features. In a configuration which uses BIND's default settings the vulnerable code path is not exposed, but a server can be rendered vulnerable by explicitly setting values for the tkey-gssapi-keytab or tkey-gssapi-credential configuration options. Although the default configuration is not vulnerable, GSS-TSIG is frequently used in networks where BIND is integrated with Samba, as well as in mixed-server environments that combine BIND servers with Active Directory domain controllers. For servers that meet these conditions, the ISC SPNEGO implementation is vulnerable to various attacks, depending on the CPU architecture for which BIND was built: For named binaries compiled for 64-bit platforms, this flaw can be used to trigger a buffer over-read, leading to a server crash. For named binaries compiled for 32-bit platforms, this flaw can be used to trigger a server crash due to a buffer overflow and possibly also to achieve remote code execution. We have determined that standard SPNEGO implementations are available in the MIT and Heimdal Kerberos libraries, which support a broad range of operating systems, rendering the ISC implementation unnecessary and obsolete. Therefore, to reduce the attack surface for BIND users, we will be removing the ISC SPNEGO implementation in the April releases of BIND 9.11 and 9.16 (it had already been dropped from BIND 9.17). We would not normally remove something from a stable ESV (Extended Support Version) of BIND, but since system libraries can replace the ISC SPNEGO implementation, we have made an exception in this case for reasons of stability and security.", title: "CVE description", }, ], product_status: { recommended: [ "SUSE Linux Enterprise Point of Sale 11 SP3:bind-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-chrootenv-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-devel-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-doc-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-libs-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-utils-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.ppc64", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.s390x", 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"vendor_fix", details: "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n", product_ids: [ "SUSE Linux Enterprise Point of Sale 11 SP3:bind-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-chrootenv-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-devel-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-doc-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-libs-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Point of Sale 11 SP3:bind-utils-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.i586", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.ppc64", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.s390x", "SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1.x86_64", "SUSE Linux Enterprise Server 11 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SP4-LTSS:bind-utils-9.9.6P1-0.51.26.1.x86_64", ], }, ], threats: [ { category: "impact", date: "2021-05-04T06:34:54Z", details: "important", }, ], title: "CVE-2021-25216", }, ], }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.