Vulnerability-Lookup

CNVD-2017-36545

Vulnerability from cnvd - Published: 2017-12-07

Title

libav拒绝服务漏洞（CNVD-2017-36545）

Description

Libav（前身是FFmpeg）是Libav团队的一套跨平台的可对音频和视频进行录制、转换的解决方案，它包含了一个libavcodec编码器。 Libav 11.11及之前的版本和12.x版本至12.1版本中的libavcodec/smacker.c文件的‘smacker_decode_tree’函数存在安全漏洞，该漏洞源于程序未能正确的限制树递归。远程攻击者可借助特制的Smacker流利用该漏洞造成拒绝服务（‘bitstream.c:build_table()’函数越边界读取和应用程序崩溃）。

Severity

中

Patch Name

libav拒绝服务漏洞（CNVD-2017-36545）的补丁

Patch Description

Formal description

厂商已发布漏洞修复程序，请及时关注更新： https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f

Reference

https://nvd.nist.gov/vuln/detail/CVE-2017-16803

Impacted products

Name
['Libav Libav <=11.11', 'Libav Libav 12.x，<12.1']

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "101882"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-16803"
    }
  },
  "description": "Libav\uff08\u524d\u8eab\u662fFFmpeg\uff09\u662fLibav\u56e2\u961f\u7684\u4e00\u5957\u8de8\u5e73\u53f0\u7684\u53ef\u5bf9\u97f3\u9891\u548c\u89c6\u9891\u8fdb\u884c\u5f55\u5236\u3001\u8f6c\u6362\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u5b83\u5305\u542b\u4e86\u4e00\u4e2alibavcodec\u7f16\u7801\u5668\u3002\r\n\r\nLibav 11.11\u53ca\u4e4b\u524d\u7684\u7248\u672c\u548c12.x\u7248\u672c\u81f312.1\u7248\u672c\u4e2d\u7684libavcodec/smacker.c\u6587\u4ef6\u7684\u2018smacker_decode_tree\u2019\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u9650\u5236\u6811\u9012\u5f52\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684Smacker\u6d41\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u2018bitstream.c:build_table()\u2019\u51fd\u6570\u8d8a\u8fb9\u754c\u8bfb\u53d6\u548c\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\uff09\u3002",
  "discovererName": "hackyzh.",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-36545",
  "openTime": "2017-12-07",
  "patchDescription": "Libav\uff08\u524d\u8eab\u662fFFmpeg\uff09\u662fLibav\u56e2\u961f\u7684\u4e00\u5957\u8de8\u5e73\u53f0\u7684\u53ef\u5bf9\u97f3\u9891\u548c\u89c6\u9891\u8fdb\u884c\u5f55\u5236\u3001\u8f6c\u6362\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u5b83\u5305\u542b\u4e86\u4e00\u4e2alibavcodec\u7f16\u7801\u5668\u3002\r\n\r\nLibav 11.11\u53ca\u4e4b\u524d\u7684\u7248\u672c\u548c12.x\u7248\u672c\u81f312.1\u7248\u672c\u4e2d\u7684libavcodec/smacker.c\u6587\u4ef6\u7684\u2018smacker_decode_tree\u2019\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u9650\u5236\u6811\u9012\u5f52\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684Smacker\u6d41\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u2018bitstream.c:build_table()\u2019\u51fd\u6570\u8d8a\u8fb9\u754c\u8bfb\u53d6\u548c\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\uff09\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": "libav\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-36545\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Libav Libav \u003c=11.11",
      "Libav Libav 12.x\uff0c\u003c12.1"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2017-16803",
  "serverity": "\u4e2d",
  "submitTime": "2017-11-14",
  "title": "libav\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-36545\uff09"
}

CVE-2017-16803 (GCVE-0-2017-16803)

Vulnerability from cvelistv5 – Published: 2017-11-13 17:00 – Updated: 2024-08-05 20:35

Summary

In Libav through 11.11 and 12.x through 12.1, the smacker_decode_tree function in libavcodec/smacker.c does not properly restrict tree recursion, which allows remote attackers to cause a denial of service (bitstream.c:build_table() out-of-bounds read and application crash) via a crafted Smacker stream.

Severity

No CVSS data available.

CWE

Assigner

mitre

References

5 references

URL	Tags
https://www.debian.org/security/2018/dsa-4119	vendor-advisoryx_refsource_DEBIAN
https://security.gentoo.org/glsa/201811-19	vendor-advisoryx_refsource_GENTOO
https://bugzilla.libav.org/show_bug.cgi?id=1098	x_refsource_CONFIRM
http://www.securityfocus.com/bid/101882	vdb-entryx_refsource_BID
https://github.com/libav/libav/commit/cd4663dc803…	x_refsource_CONFIRM

Date Public

2017-11-13 00:00

Show details on NVD website

JSON

To clipboard

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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.

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.

Action not permitted

CNVD-2017-36545

CVE-2017-16803 (GCVE-0-2017-16803)

Tags

Sightings

Nomenclature