Vulnerability-Lookup

CNVD-2021-40490

Vulnerability from cnvd - Published: 2021-06-09

Title

FFmpeg拒绝服务漏洞（CNVD-2021-40490）

Description

FFmpeg是一套可录制、转换以及流化音视频的完整解决方案。 FFmpeg存在安全漏洞，该漏洞源于在wtvdec.c文件中的 wtvfile_open_sector function存在内存泄露。攻击者可利用该漏洞导致拒绝服务。

Severity

中

Patch Name

FFmpeg拒绝服务漏洞（CNVD-2021-40490）的补丁

Patch Description

FFmpeg是一套可录制、转换以及流化音视频的完整解决方案。 FFmpeg存在安全漏洞，该漏洞源于在wtvdec.c文件中的 wtvfile_open_sector function存在内存泄露。攻击者可利用该漏洞导致拒绝服务。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

厂商已发布了漏洞修复程序，请及时关注更新： http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=373c1c9b691fd4c6831b3a114a006b639304c2af

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-22049

Impacted products

Name
FFmpeg FFmpeg 4.2

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-22049",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-22049"
    }
  },
  "description": "FFmpeg\u662f\u4e00\u5957\u53ef\u5f55\u5236\u3001\u8f6c\u6362\u4ee5\u53ca\u6d41\u5316\u97f3\u89c6\u9891\u7684\u5b8c\u6574\u89e3\u51b3\u65b9\u6848\u3002\n\nFFmpeg\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728wtvdec.c\u6587\u4ef6\u4e2d\u7684 wtvfile_open_sector function\u5b58\u5728\u5185\u5b58\u6cc4\u9732\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttp://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=373c1c9b691fd4c6831b3a114a006b639304c2af",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-40490",
  "openTime": "2021-06-09",
  "patchDescription": "FFmpeg\u662f\u4e00\u5957\u53ef\u5f55\u5236\u3001\u8f6c\u6362\u4ee5\u53ca\u6d41\u5316\u97f3\u89c6\u9891\u7684\u5b8c\u6574\u89e3\u51b3\u65b9\u6848\u3002\r\n\r\nFFmpeg\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728wtvdec.c\u6587\u4ef6\u4e2d\u7684 wtvfile_open_sector function\u5b58\u5728\u5185\u5b58\u6cc4\u9732\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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": "FFmpeg\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-40490\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "FFmpeg FFmpeg 4.2"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-22049",
  "serverity": "\u4e2d",
  "submitTime": "2021-06-03",
  "title": "FFmpeg\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-40490\uff09"
}

CVE-2020-22049 (GCVE-0-2020-22049)

Vulnerability from cvelistv5 – Published: 2021-06-02 15:44 – Updated: 2024-08-04 14:51

Summary

A Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak in the wtvfile_open_sector function in wtvdec.c.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://trac.ffmpeg.org/ticket/8314	x_refsource_MISC
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitd…	x_refsource_MISC
https://www.debian.org/security/2021/dsa-4990	vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

To clipboard

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            "url": "https://trac.ffmpeg.org/ticket/8314"
          },
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            "url": "http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=373c1c9b691fd4c6831b3a114a006b639304c2af"
          },
          {
            "name": "DSA-4990",
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              "x_refsource_DEBIAN",
              "x_transferred"
            ],
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          },
          {
            "name": "[debian-lts-announce] 20211114 [SECURITY] [DLA 2818-1] ffmpeg security update",
            "tags": [
              "mailing-list",
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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-2021-40490

CVE-2020-22049 (GCVE-0-2020-22049)

Tags

Sightings

Nomenclature

Related by attack behaviour