Vulnerability-Lookup

CNVD-2022-19089

Vulnerability from cnvd - Published: 2022-03-14

Title

libspf2缓冲区溢出漏洞（CNVD-2022-19089）

Description

libspf2是一个库，它允许电子邮件系统（例如Sendmail、Postfix、Exim、Zmailer和MS Exchange）检查SPF记录并确保电子邮件得到了来自它的域名的授权。这可以防止垃圾邮件发送者、诈骗者和电子邮件病毒/蠕虫常用的电子邮件伪造。 libspf2存在缓冲区溢出漏洞，远程攻击者可利用该漏洞使用一个特定的SPF DNS记录执行任意代码。

Severity

高

Patch Name

libspf2缓冲区溢出漏洞（CNVD-2022-19089）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/shevek/libspf2/tree/8131fe140704eaae695e76b5cd09e39bd1dd220b

Reference

https://github.com/shevek/libspf2/tree/8131fe140704eaae695e76b5cd09e39bd1dd220b

Impacted products

Name
libspf2 libspf2 <=1.2.11

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-33913",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-33913"
    }
  },
  "description": "libspf2\u662f\u4e00\u4e2a\u5e93\uff0c\u5b83\u5141\u8bb8\u7535\u5b50\u90ae\u4ef6\u7cfb\u7edf\uff08\u4f8b\u5982Sendmail\u3001Postfix\u3001Exim\u3001Zmailer\u548cMS Exchange\uff09\u68c0\u67e5SPF\u8bb0\u5f55\u5e76\u786e\u4fdd\u7535\u5b50\u90ae\u4ef6\u5f97\u5230\u4e86\u6765\u81ea\u5b83\u7684\u57df\u540d\u7684\u6388\u6743\u3002\u8fd9\u53ef\u4ee5\u9632\u6b62\u5783\u573e\u90ae\u4ef6\u53d1\u9001\u8005\u3001\u8bc8\u9a97\u8005\u548c\u7535\u5b50\u90ae\u4ef6\u75c5\u6bd2/\u8815\u866b\u5e38\u7528\u7684\u7535\u5b50\u90ae\u4ef6\u4f2a\u9020\u3002\n\nlibspf2\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4f7f\u7528\u4e00\u4e2a\u7279\u5b9a\u7684SPF DNS\u8bb0\u5f55\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/shevek/libspf2/tree/8131fe140704eaae695e76b5cd09e39bd1dd220b",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-19089",
  "openTime": "2022-03-14",
  "patchDescription": "libspf2\u662f\u4e00\u4e2a\u5e93\uff0c\u5b83\u5141\u8bb8\u7535\u5b50\u90ae\u4ef6\u7cfb\u7edf\uff08\u4f8b\u5982Sendmail\u3001Postfix\u3001Exim\u3001Zmailer\u548cMS Exchange\uff09\u68c0\u67e5SPF\u8bb0\u5f55\u5e76\u786e\u4fdd\u7535\u5b50\u90ae\u4ef6\u5f97\u5230\u4e86\u6765\u81ea\u5b83\u7684\u57df\u540d\u7684\u6388\u6743\u3002\u8fd9\u53ef\u4ee5\u9632\u6b62\u5783\u573e\u90ae\u4ef6\u53d1\u9001\u8005\u3001\u8bc8\u9a97\u8005\u548c\u7535\u5b50\u90ae\u4ef6\u75c5\u6bd2/\u8815\u866b\u5e38\u7528\u7684\u7535\u5b50\u90ae\u4ef6\u4f2a\u9020\u3002\r\n\r\nlibspf2\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4f7f\u7528\u4e00\u4e2a\u7279\u5b9a\u7684SPF DNS\u8bb0\u5f55\u6267\u884c\u4efb\u610f\u4ee3\u7801\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": "libspf2\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2022-19089\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "libspf2 libspf2 \u003c=1.2.11"
  },
  "referenceLink": "https://github.com/shevek/libspf2/tree/8131fe140704eaae695e76b5cd09e39bd1dd220b",
  "serverity": "\u9ad8",
  "submitTime": "2022-01-25",
  "title": "libspf2\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2022-19089\uff09"
}

CVE-2021-33913 (GCVE-0-2021-33913)

Vulnerability from cvelistv5 – Published: 2022-01-19 00:00 – Updated: 2024-08-04 00:05

Summary

libspf2 before 1.2.11 has a heap-based buffer overflow that might allow remote attackers to execute arbitrary code (via an unauthenticated e-mail message from anywhere on the Internet) with a crafted SPF DNS record, because of SPF_record_expand_data in spf_expand.c. The amount of overflowed data depends on the relationship between the length of an entire domain name and the length of its leftmost label. The vulnerable code may be part of the supply chain of a site's e-mail infrastructure (e.g., with additional configuration, Exim can use libspf2; the Postfix web site links to unofficial patches for use of libspf2 with Postfix; older versions of spfquery relied on libspf2) but most often is not.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://github.com/shevek/libspf2/tree/8131fe1407…
https://nathanielbennett.com/blog/libspf2-cve-jan…
https://lists.debian.org/debian-lts-announce/2022…	mailing-list
https://security.gentoo.org/glsa/202401-22	vendor-advisory

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T00:05:51.790Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/shevek/libspf2/tree/8131fe140704eaae695e76b5cd09e39bd1dd220b"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://nathanielbennett.com/blog/libspf2-cve-jan-2022-disclosure"
          },
          {
            "name": "[debian-lts-announce] 20220121 [SECURITY] [DLA 2890-1] libspf2 security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/01/msg00015.html"
          },
          {
            "name": "GLSA-202401-22",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202401-22"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "libspf2 before 1.2.11 has a heap-based buffer overflow that might allow remote attackers to execute arbitrary code (via an unauthenticated e-mail message from anywhere on the Internet) with a crafted SPF DNS record, because of SPF_record_expand_data in spf_expand.c. The amount of overflowed data depends on the relationship between the length of an entire domain name and the length of its leftmost label. The vulnerable code may be part of the supply chain of a site\u0027s e-mail infrastructure (e.g., with additional configuration, Exim can use libspf2; the Postfix web site links to unofficial patches for use of libspf2 with Postfix; older versions of spfquery relied on libspf2) but most often is not."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-01-15T17:06:15.903Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/shevek/libspf2/tree/8131fe140704eaae695e76b5cd09e39bd1dd220b"
        },
        {
          "url": "https://nathanielbennett.com/blog/libspf2-cve-jan-2022-disclosure"
        },
        {
          "name": "[debian-lts-announce] 20220121 [SECURITY] [DLA 2890-1] libspf2 security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/01/msg00015.html"
        },
        {
          "name": "GLSA-202401-22",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202401-22"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-33913",
    "datePublished": "2022-01-19T00:00:00.000Z",
    "dateReserved": "2021-06-07T00:00:00.000Z",
    "dateUpdated": "2024-08-04T00:05:51.790Z",
    "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.

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.

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CNVD-2022-19089

CVE-2021-33913 (GCVE-0-2021-33913)

Tags

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Nomenclature

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