Vulnerability-Lookup

CNVD-2022-19088

Vulnerability from cnvd - Published: 2022-03-14

Title

libspf2缓冲区溢出漏洞（CNVD-2022-19088）

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，攻击者可利用该漏洞通过一个特定的SPF DNS记录执行任意代码。

Severity

高

Patch Name

libspf2缓冲区溢出漏洞（CNVD-2022-19088）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

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-33912",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-33912"
    }
  },
  "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\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\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-2022-19088",
  "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\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\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-2022-19088\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-2022-19088\uff09"
}

CVE-2021-33912 (GCVE-0-2021-33912)

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

Summary

libspf2 before 1.2.11 has a four-byte 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 incorrect sprintf usage in SPF_record_expand_data in spf_expand.c. 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 CNA under the mitre root

CNA scorecard E 29/100 over 2359 records in the last 180 days details

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

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T00:05:52.118Z",
          "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 four-byte 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 incorrect sprintf usage in SPF_record_expand_data in spf_expand.c. 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": "2024-01-15T17:06:19.307Z",
        "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-2021-33912",
    "datePublished": "2022-01-19T00:00:00.000Z",
    "dateReserved": "2021-06-07T00:00:00.000Z",
    "dateUpdated": "2024-08-04T00:05:52.118Z",
    "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.

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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.

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