cnvd-2021-34514
Vulnerability from cnvd
Title: Exim后置链接漏洞
Description:
Exim是一个运行于Unix系统中的开源消息传送代理(MTA),它主要负责邮件的路由、转发和投递。
Exim 存在安全漏洞,该漏洞源于Exim日志目录中的符号链接以下问题而存在的。攻击者可利用该漏洞覆盖文件系统上任何位置的关键root所有文件。
Severity: 高
Patch Name: Exim后置链接漏洞 的补丁
Patch Description:
Exim是一个运行于Unix系统中的开源消息传送代理(MTA),它主要负责邮件的路由、转发和投递。
Exim 存在安全漏洞,该漏洞源于Exim日志目录中的符号链接以下问题而存在的。攻击者可利用该漏洞覆盖文件系统上任何位置的关键root所有文件。目前,供应商发布了安全公告及相关补丁信息,修复了此漏洞。
Formal description:
目前厂商已发布升级补丁以修复漏洞,补丁获取链接: https://www.debian.org/security/2021/dsa-4912
Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-28007
Impacted products
Name | Exim Exim >=4.00,<4.94.2 |
---|
{ "cves": { "cve": { "cveNumber": "CVE-2020-28007" } }, "description": "Exim\u662f\u4e00\u4e2a\u8fd0\u884c\u4e8eUnix\u7cfb\u7edf\u4e2d\u7684\u5f00\u6e90\u6d88\u606f\u4f20\u9001\u4ee3\u7406\uff08MTA\uff09\uff0c\u5b83\u4e3b\u8981\u8d1f\u8d23\u90ae\u4ef6\u7684\u8def\u7531\u3001\u8f6c\u53d1\u548c\u6295\u9012\u3002\n\nExim \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eExim\u65e5\u5fd7\u76ee\u5f55\u4e2d\u7684\u7b26\u53f7\u94fe\u63a5\u4ee5\u4e0b\u95ee\u9898\u800c\u5b58\u5728\u7684\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8986\u76d6\u6587\u4ef6\u7cfb\u7edf\u4e0a\u4efb\u4f55\u4f4d\u7f6e\u7684\u5173\u952eroot\u6240\u6709\u6587\u4ef6\u3002", "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://www.debian.org/security/2021/dsa-4912", "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e", "number": "CNVD-2021-34514", "openTime": "2021-05-14", "patchDescription": "Exim\u662f\u4e00\u4e2a\u8fd0\u884c\u4e8eUnix\u7cfb\u7edf\u4e2d\u7684\u5f00\u6e90\u6d88\u606f\u4f20\u9001\u4ee3\u7406\uff08MTA\uff09\uff0c\u5b83\u4e3b\u8981\u8d1f\u8d23\u90ae\u4ef6\u7684\u8def\u7531\u3001\u8f6c\u53d1\u548c\u6295\u9012\u3002\r\n\r\nExim \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eExim\u65e5\u5fd7\u76ee\u5f55\u4e2d\u7684\u7b26\u53f7\u94fe\u63a5\u4ee5\u4e0b\u95ee\u9898\u800c\u5b58\u5728\u7684\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8986\u76d6\u6587\u4ef6\u7cfb\u7edf\u4e0a\u4efb\u4f55\u4f4d\u7f6e\u7684\u5173\u952eroot\u6240\u6709\u6587\u4ef6\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002", "patchName": "Exim\u540e\u7f6e\u94fe\u63a5\u6f0f\u6d1e \u7684\u8865\u4e01", "products": { "product": "Exim Exim \u003e=4.00\uff0c\u003c4.94.2" }, "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-28007", "serverity": "\u9ad8", "submitTime": "2021-05-14", "title": "Exim\u540e\u7f6e\u94fe\u63a5\u6f0f\u6d1e" }
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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.
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