CVE-2021-25215— An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself
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I. Basic Information for CVE-2021-25215
Vulnerability Information
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Vulnerability Title
An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
ISC BIND 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ISC BIND是美国ISC公司的一套实现了DNS协议的开源软件。 ISC BIND 存在安全漏洞，该漏洞源于回答DNAME的查询时,断言检查可能会失败 需要处理DNAME才能解决的记录。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2021-25215
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- https://kb.isc.org/v1/docs/cve-2021-25215x_refsource_CONFIRM
- https://www.oracle.com/security-alerts/cpuoct2021.htmlx_refsource_MISC
- SSA-389290 V1.0: Third-Party Component Vulnerabilities in SINEC INSx_refsource_CONFIRM
- https://security.netapp.com/advisory/ntap-20210521-0006/x_refsource_CONFIRM
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/vendor-advisoryx_refsource_FEDORA
- oss-security - Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2021-25215
Same Patch Batch · ISC · 2021-04-29 · 3 CVEs total
| CVE-2021-25216 | 8.1 HIGH | A second vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a b |
| CVE-2021-25214 | 6.5 MEDIUM | A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly |
IV. Related Vulnerabilities
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V. Comments for CVE-2021-25215
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