Security update for bind SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2021:14714-1 Final 1 1 2021-05-04T06:34:54Z current 2021-05-04T06:34:54Z 2021-05-04T06:34:54Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for bind 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). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). sleposp3-bind-14714,slessp4-bind-14714 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2021/suse-su-202114714-1/ Link for SUSE-SU-2021:14714-1 https://lists.suse.com/pipermail/sle-security-updates/2021-May/008726.html E-Mail link for SUSE-SU-2021:14714-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1185345 SUSE Bug 1185345 https://www.suse.com/security/cve/CVE-2021-25214/ SUSE CVE CVE-2021-25214 page https://www.suse.com/security/cve/CVE-2021-25215/ SUSE CVE CVE-2021-25215 page https://www.suse.com/security/cve/CVE-2021-25216/ SUSE CVE CVE-2021-25216 page SUSE Linux Enterprise Point of Sale 11 SP3 SUSE Linux Enterprise Server 11 SP4-LTSS bind-9.9.6P1-0.51.26.1 bind-chrootenv-9.9.6P1-0.51.26.1 bind-devel-9.9.6P1-0.51.26.1 bind-doc-9.9.6P1-0.51.26.1 bind-libs-9.9.6P1-0.51.26.1 bind-utils-9.9.6P1-0.51.26.1 bind-libs-32bit-9.9.6P1-0.51.26.1 bind-9.9.6P1-0.51.26.1 as a component of SUSE Linux Enterprise Point of Sale 11 SP3 bind-chrootenv-9.9.6P1-0.51.26.1 as a component of SUSE Linux Enterprise Point of Sale 11 SP3 bind-devel-9.9.6P1-0.51.26.1 as a component of SUSE Linux Enterprise Point of Sale 11 SP3 bind-doc-9.9.6P1-0.51.26.1 as a component of SUSE Linux Enterprise Point of Sale 11 SP3 bind-libs-9.9.6P1-0.51.26.1 as a component of SUSE Linux Enterprise Point of Sale 11 SP3 bind-utils-9.9.6P1-0.51.26.1 as a component of SUSE Linux Enterprise Point of Sale 11 SP3 bind-9.9.6P1-0.51.26.1 as a component of SUSE Linux Enterprise Server 11 SP4-LTSS bind-chrootenv-9.9.6P1-0.51.26.1 as a component of SUSE Linux Enterprise Server 11 SP4-LTSS bind-doc-9.9.6P1-0.51.26.1 as a component of SUSE Linux Enterprise Server 11 SP4-LTSS bind-libs-9.9.6P1-0.51.26.1 as a component of SUSE Linux Enterprise Server 11 SP4-LTSS bind-libs-32bit-9.9.6P1-0.51.26.1 as a component of SUSE Linux Enterprise Server 11 SP4-LTSS bind-utils-9.9.6P1-0.51.26.1 as a component of SUSE Linux Enterprise Server 11 SP4-LTSS 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. CVE-2021-25214 SUSE Linux Enterprise Point of Sale 11 SP3:bind-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-chrootenv-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-devel-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-doc-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-libs-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-utils-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-chrootenv-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-doc-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-libs-32bit-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-libs-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-utils-9.9.6P1-0.51.26.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2021/suse-su-202114714-1/ https://www.suse.com/security/cve/CVE-2021-25214.html CVE-2021-25214 https://bugzilla.suse.com/1185345 SUSE Bug 1185345 In BIND 9.0.0 -> 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 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. CVE-2021-25215 SUSE Linux Enterprise Point of Sale 11 SP3:bind-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-chrootenv-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-devel-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-doc-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-libs-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-utils-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-chrootenv-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-doc-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-libs-32bit-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-libs-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-utils-9.9.6P1-0.51.26.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2021/suse-su-202114714-1/ https://www.suse.com/security/cve/CVE-2021-25215.html CVE-2021-25215 https://bugzilla.suse.com/1185345 SUSE Bug 1185345 https://bugzilla.suse.com/1189848 SUSE Bug 1189848 https://bugzilla.suse.com/1196172 SUSE Bug 1196172 https://bugzilla.suse.com/1199298 SUSE Bug 1199298 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. CVE-2021-25216 SUSE Linux Enterprise Point of Sale 11 SP3:bind-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-chrootenv-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-devel-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-doc-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-libs-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Point of Sale 11 SP3:bind-utils-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-chrootenv-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-doc-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-libs-32bit-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-libs-9.9.6P1-0.51.26.1 SUSE Linux Enterprise Server 11 SP4-LTSS:bind-utils-9.9.6P1-0.51.26.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2021/suse-su-202114714-1/ https://www.suse.com/security/cve/CVE-2021-25216.html CVE-2021-25216 https://bugzilla.suse.com/1185345 SUSE Bug 1185345 https://bugzilla.suse.com/1189848 SUSE Bug 1189848