cnvd - cnvd-2016-11272

cnvd-2016-11272

Vulnerability from cnvd

Title: p7zip空指针逆向引用漏洞

Description:

p7zip是一套用于类Unix系统中的数据压缩、解压缩软件（也就是Win下的7z压缩软件）。

p7zip 16.02及之前的版本中的CPP/7zip/Archive/7z/7zIn.cpp文件中的‘CInArchive::ReadAndDecodePackedStreams’函数存在安全漏洞。攻击者可通过解码畸形的7z文件利用该漏洞造成拒绝服务（崩溃）。

Severity: 中

Patch Name: p7zip空指针逆向引用漏洞的补丁

Patch Description:

p7zip是一套用于类Unix系统中的数据压缩、解压缩软件（也就是Win下的7z压缩软件）。

p7zip 16.02及之前的版本中的CPP/7zip/Archive/7z/7zIn.cpp文件中的‘CInArchive::ReadAndDecodePackedStreams’函数存在安全漏洞。攻击者可通过解码畸形的7z文件利用该漏洞造成拒绝服务（崩溃）。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:

目前厂商已经发布了升级补丁以修复此安全问题，补丁获取链接： https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/

Reference: https://github.com/yangke/7zip-null-pointer-dereference https://sourceforge.net/p/p7zip/bugs/185/

Impacted products

Name
p7zip p7zip 16.02

Show details on source website

JSON

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{
  "bids": {
    "bid": {
      "bidNumber": "94294"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-9296"
    }
  },
  "description": "p7zip\u662f\u4e00\u5957\u7528\u4e8e\u7c7bUnix\u7cfb\u7edf\u4e2d\u7684\u6570\u636e\u538b\u7f29\u3001\u89e3\u538b\u7f29\u8f6f\u4ef6\uff08\u4e5f\u5c31\u662fWin\u4e0b\u76847z\u538b\u7f29\u8f6f\u4ef6\uff09\u3002\r\n\r\np7zip 16.02\u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684CPP/7zip/Archive/7z/7zIn.cpp\u6587\u4ef6\u4e2d\u7684\u2018CInArchive::ReadAndDecodePackedStreams\u2019\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u89e3\u7801\u7578\u5f62\u76847z\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5d29\u6e83\uff09\u3002",
  "discovererName": "Hanno B\u00c3\u00b6ck",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-11272",
  "openTime": "2016-11-18",
  "patchDescription": "p7zip\u662f\u4e00\u5957\u7528\u4e8e\u7c7bUnix\u7cfb\u7edf\u4e2d\u7684\u6570\u636e\u538b\u7f29\u3001\u89e3\u538b\u7f29\u8f6f\u4ef6\uff08\u4e5f\u5c31\u662fWin\u4e0b\u76847z\u538b\u7f29\u8f6f\u4ef6\uff09\u3002\r\n\r\np7zip 16.02\u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684CPP/7zip/Archive/7z/7zIn.cpp\u6587\u4ef6\u4e2d\u7684\u2018CInArchive::ReadAndDecodePackedStreams\u2019\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u89e3\u7801\u7578\u5f62\u76847z\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\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": "p7zip\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "p7zip p7zip 16.02"
  },
  "referenceLink": "https://github.com/yangke/7zip-null-pointer-dereference\r\nhttps://sourceforge.net/p/p7zip/bugs/185/",
  "serverity": "\u4e2d",
  "submitTime": "2016-11-15",
  "title": "p7zip\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\u6f0f\u6d1e"
}

CVE-2016-9296 (GCVE-0-2016-9296)

Vulnerability from cvelistv5

Published

2016-11-12 02:19

Modified

2024-08-06 02:42

Severity ?

CWE

Summary

A null pointer dereference bug affects the 16.02 and many old versions of p7zip. A lack of null pointer check for the variable folders.PackPositions in function CInArchive::ReadAndDecodePackedStreams in CPP/7zip/Archive/7z/7zIn.cpp, as used in the 7z.so library and in 7z applications, will cause a crash and a denial of service when decoding malformed 7z files.

References

▼	URL	Tags
	http://www.securityfocus.com/bid/94294	vdb-entry, x_refsource_BID
	https://sourceforge.net/p/p7zip/bugs/185/	x_refsource_MISC
	https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/	x_refsource_MISC
	https://github.com/yangke/7zip-null-pointer-dereference	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

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          "dateUpdated": "2024-08-06T02:42:11.265Z",
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            "url": "https://sourceforge.net/p/p7zip/bugs/185/"
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            "url": "https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/"
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          }
        ],
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      "providerMetadata": {
        "dateUpdated": "2016-12-26T01:57:02",
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      "x_legacyV4Record": {
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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