RHSA-2021:1469: bind 安全更新

最近收到了服务器有漏洞的通知，提示：RHSA-2021:1469:bind安全更新，接下来就为大家介绍一下bind安全更新的解决方法，有需要的小伙伴可以参考一下：

1、漏洞提示：

RHSA-2021:1469: bind 安全更新

2、漏洞描述：

漏洞编号 漏洞公告 漏洞描述 CVE-2021-25215

BIND安全漏洞

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.

3、影响说明：

软件：bind-export-libs 9.11.4-26.P2.el7_9.4 命中：bind-export-libs version less than 32:9.11.4-26.P2.el7_9.5 路径：/etc/ld.so.conf.d/bind-export-x86_64.conf 软件：bind-license 9.11.4-26.P2.el7_9.4 命中：bind-license version less than 32:9.11.4-26.P2.el7_9.5 路径：/usr/share/licenses/bind-license-9.11.4

4、解决方法：

yum update bind-export-libs yum update bind-license

5、重启验证：

reboot