CVE-2022-3094— ISC BIND 资源管理错误漏洞
一分钟漏洞结论
影响对象
ISC BIND 9
利用判断
利用概率较高，应尽快评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
ISC BIND是美国ISC公司的一套实现了DNS协议的开源软件。 BIND 9.16.0版本至9.16.36版本、9.18.0版本至9.18.10版本、9.19.0版本至9.19.8版本存在安全漏洞，该漏洞源于发送大量动态DNS更新可能会导致named分配大量内存，这可能会导致named由于缺少可用内存而退出。
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一、 漏洞 CVE-2022-3094 基础信息
漏洞信息
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Vulnerability Title
An UPDATE message flood may cause named to exhaust all available memory
来源: CVE Program / CVE List V5
Vulnerability Description
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 internal resources rather than memory constraints. This may reduce performance but should not be a significant problem for most servers. Therefore we don't intend to address this for BIND versions prior to BIND 9.16.
This issue affects BIND 9 versions 9.16.0 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.8-S1 through 9.16.36-S1.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
ISC BIND 资源管理错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
ISC BIND是美国ISC公司的一套实现了DNS协议的开源软件。 BIND 9.16.0版本至9.16.36版本、9.18.0版本至9.18.10版本、9.19.0版本至9.19.8版本存在安全漏洞，该漏洞源于发送大量动态DNS更新可能会导致named分配大量内存，这可能会导致named由于缺少可用内存而退出。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2022-3094 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2022-3094 其他参考 (1)
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https://kb.isc.org/docs/cve-2022-3094 vendor-advisory
同批安全公告 · ISC · 2023-01-25 · 共 4 条
| CVE-2022-3924 | 7.5 HIGH | ISC BIND 安全漏洞 |
| CVE-2022-3736 | 7.5 HIGH | ISC BIND 安全漏洞 |
| CVE-2022-3488 | 7.5 HIGH | ISC BIND 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2022-3094
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