Vulnerability-Lookup

CNVD-2022-56952

Vulnerability from cnvd - Published: 2022-08-12

Title

Exim存在未明漏洞（CNVD-2022-56952）

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。 Exim4.95之前版本存在安全漏洞，该漏洞源于当设置了sender_host_name 时，host_name_lookup中的别名列表有一个基于堆的缓冲区溢出。目前没有详细的漏洞细节提供。

Severity

高

Patch Name

Exim存在未明漏洞（CNVD-2022-56952）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。 Exim4.95之前版本存在安全漏洞，该漏洞源于当设置了sender_host_name 时，host_name_lookup中的别名列表有一个基于堆的缓冲区溢出。目前没有详细的漏洞细节提供。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，详情请关注厂商主页： https://github.com/Exim/exim

Reference

https://nvd.nist.gov/vuln/detail/CVE-2022-37452

Impacted products

Name
Exim Exim <4.95

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-37452"
    }
  },
  "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\nExim4.95\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5f53\u8bbe\u7f6e\u4e86sender_host_name \u65f6\uff0chost_name_lookup\u4e2d\u7684\u522b\u540d\u5217\u8868\u6709\u4e00\u4e2a\u57fa\u4e8e\u5806\u7684\u7f13\u51b2\u533a\u6ea2\u51fa\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttps://github.com/Exim/exim",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-56952",
  "openTime": "2022-08-12",
  "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\nExim4.95\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5f53\u8bbe\u7f6e\u4e86sender_host_name \u65f6\uff0chost_name_lookup\u4e2d\u7684\u522b\u540d\u5217\u8868\u6709\u4e00\u4e2a\u57fa\u4e8e\u5806\u7684\u7f13\u51b2\u533a\u6ea2\u51fa\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2022-56952\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Exim Exim \u003c4.95"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2022-37452",
  "serverity": "\u9ad8",
  "submitTime": "2022-08-09",
  "title": "Exim\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2022-56952\uff09"
}

CVE-2022-37452 (GCVE-0-2022-37452)

Vulnerability from cvelistv5 – Published: 2022-08-07 17:06 – Updated: 2024-08-03 10:29

Summary

Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

7 references

URL	Tags
https://github.com/Exim/exim/wiki/EximSecurity	x_refsource_MISC
https://www.exim.org/static/doc/security/	x_refsource_MISC
https://github.com/ivd38/exim_overflow	x_refsource_MISC
https://www.openwall.com/lists/oss-security/2022/…	x_refsource_MISC
https://github.com/Exim/exim/compare/exim-4.94...…	x_refsource_MISC
https://github.com/Exim/exim/commit/d4bc023436e4c…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T10:29:21.079Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/Exim/exim/wiki/EximSecurity"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.exim.org/static/doc/security/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/ivd38/exim_overflow"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.openwall.com/lists/oss-security/2022/08/06/8"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/Exim/exim/compare/exim-4.94...exim-4.95"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743"
          },
          {
            "name": "[debian-lts-announce] 20220827 [SECURITY] [DLA 3082-1] exim4 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/08/msg00014.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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            }
          ]
        }
      ],
      "descriptions": [
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          "lang": "en",
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        }
      ],
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        {
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        "dateUpdated": "2022-08-27T18:06:15.000Z",
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      },
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            "x_refsource_MISC"
          ],
          "url": "https://github.com/Exim/exim/wiki/EximSecurity"
        },
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.exim.org/static/doc/security/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ivd38/exim_overflow"
        },
        {
          "tags": [
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          ],
          "url": "https://www.openwall.com/lists/oss-security/2022/08/06/8"
        },
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          "url": "https://github.com/Exim/exim/compare/exim-4.94...exim-4.95"
        },
        {
          "tags": [
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          "url": "https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743"
        },
        {
          "name": "[debian-lts-announce] 20220827 [SECURITY] [DLA 3082-1] exim4 security update",
          "tags": [
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            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/08/msg00014.html"
        }
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        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
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            },
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              "url": "https://www.exim.org/static/doc/security/"
            },
            {
              "name": "https://github.com/ivd38/exim_overflow",
              "refsource": "MISC",
              "url": "https://github.com/ivd38/exim_overflow"
            },
            {
              "name": "https://www.openwall.com/lists/oss-security/2022/08/06/8",
              "refsource": "MISC",
              "url": "https://www.openwall.com/lists/oss-security/2022/08/06/8"
            },
            {
              "name": "https://github.com/Exim/exim/compare/exim-4.94...exim-4.95",
              "refsource": "MISC",
              "url": "https://github.com/Exim/exim/compare/exim-4.94...exim-4.95"
            },
            {
              "name": "https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743",
              "refsource": "MISC",
              "url": "https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743"
            },
            {
              "name": "[debian-lts-announce] 20220827 [SECURITY] [DLA 3082-1] exim4 security update",
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    "datePublished": "2022-08-07T17:06:55.000Z",
    "dateReserved": "2022-08-07T00:00:00.000Z",
    "dateUpdated": "2024-08-03T10:29:21.079Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.