cnvd - cnvd-2015-05782

cnvd-2015-05782

Vulnerability from cnvd

Title: Libevent evbuffer API整数溢出漏洞

Description:

Libevent是软件开发者Nick Mathewson和Niels Provos共同研发的一个异步事件处理软件函数库，它可通过应用程序编程接口（API）设定某些事件发生时所执行的函数。

Libevent 2.0.22之前2.0.x版本和2.1.5-beta之前2.1.x版本的evbuffer API中存在整数溢出漏洞，该漏洞源于多个函数（evbuffer_add，evbuffer_prepend，evbuffer_expand，exbuffer_reserve_space，evbuffer_read）未能充分过滤‘insanely large inputs’值。攻击者可利用该漏洞造成拒绝服务（基于堆的缓冲区溢出或无限循环）。

Severity: 高

Patch Name: Libevent evbuffer API整数溢出漏洞的补丁

Patch Description:

Libevent是软件开发者Nick Mathewson和Niels Provos共同研发的一个异步事件处理软件函数库，它可通过应用程序编程接口（API）设定某些事件发生时所执行的函数。Libevent 2.0.22之前2.0.x版本和2.1.5-beta之前2.1.x版本的evbuffer API中存在整数溢出漏洞，该漏洞源于多个函数（evbuffer_add，evbuffer_prepend，evbuffer_expand，exbuffer_reserve_space，evbuffer_read）未能充分过滤‘insanely large inputs’值。攻击者可利用该漏洞造成拒绝服务（基于堆的缓冲区溢出或无限循环）。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://raw.githubusercontent.com/libevent/libevent/release-2.0.22-stable/ChangeLog

Reference: https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-6525

Impacted products

Name
['libevent Libevent 2.0.x(<2.0.22)', 'libevent Libevent 2.1.x(<2.1.5-beta)']

Show details on source website

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2015-6525"
    }
  },
  "description": "Libevent\u662f\u8f6f\u4ef6\u5f00\u53d1\u8005Nick Mathewson\u548cNiels Provos\u5171\u540c\u7814\u53d1\u7684\u4e00\u4e2a\u5f02\u6b65\u4e8b\u4ef6\u5904\u7406\u8f6f\u4ef6\u51fd\u6570\u5e93\uff0c\u5b83\u53ef\u901a\u8fc7\u5e94\u7528\u7a0b\u5e8f\u7f16\u7a0b\u63a5\u53e3\uff08API\uff09\u8bbe\u5b9a\u67d0\u4e9b\u4e8b\u4ef6\u53d1\u751f\u65f6\u6240\u6267\u884c\u7684\u51fd\u6570\u3002\r\n\r\nLibevent 2.0.22\u4e4b\u524d2.0.x\u7248\u672c\u548c2.1.5-beta\u4e4b\u524d2.1.x\u7248\u672c\u7684evbuffer API\u4e2d\u5b58\u5728\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u591a\u4e2a\u51fd\u6570\uff08evbuffer_add\uff0cevbuffer_prepend\uff0cevbuffer_expand\uff0cexbuffer_reserve_space\uff0cevbuffer_read\uff09\u672a\u80fd\u5145\u5206\u8fc7\u6ee4\u2018insanely large inputs\u2019\u503c\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u57fa\u4e8e\u5806\u7684\u7f13\u51b2\u533a\u6ea2\u51fa\u6216\u65e0\u9650\u5faa\u73af\uff09\u3002",
  "discovererName": "unknown",
  "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://raw.githubusercontent.com/libevent/libevent/release-2.0.22-stable/ChangeLog",
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  "number": "CNVD-2015-05782",
  "openTime": "2015-09-02",
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  "patchName": "Libevent evbuffer API\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
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      "libevent Libevent 2.1.x(\u003c2.1.5-beta)"
    ]
  },
  "referenceLink": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-6525",
  "serverity": "\u9ad8",
  "submitTime": "2015-08-25",
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}

CVE-2015-6525 (GCVE-0-2015-6525)

Vulnerability from cvelistv5

Published

2015-08-24 14:00

Modified

2024-08-06 07:22

Severity ?

CWE

Summary

Multiple integer overflows in the evbuffer API in Libevent 2.0.x before 2.0.22 and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via "insanely large inputs" to the (1) evbuffer_add, (2) evbuffer_prepend, (3) evbuffer_expand, (4) exbuffer_reserve_space, or (5) evbuffer_read function, which triggers a heap-based buffer overflow or an infinite loop. NOTE: this identifier was SPLIT from CVE-2014-6272 per ADT3 due to different affected versions.

References

▼	URL	Tags
	http://archives.seul.org/libevent/users/Jan-2015/msg00010.html	mailing-list, x_refsource_MLIST
	http://www.debian.org/security/2015/dsa-3119	vendor-advisory, x_refsource_DEBIAN

Impacted products

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

Show details on NVD website

JSON

To clipboard

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    "cna": {
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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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