Vulnerability-Lookup

CNVD-2015-05782

Vulnerability from cnvd - Published: 2015-09-02

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

JSON

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      "cveNumber": "CVE-2015-6525"
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  "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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      "libevent Libevent 2.1.x(\u003c2.1.5-beta)"
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  "referenceLink": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-6525",
  "serverity": "\u9ad8",
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}

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

Vulnerability from cvelistv5 – Published: 2015-08-24 14:00 – Updated: 2024-08-06 07:22

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.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

2 references

URL	Tags
http://archives.seul.org/libevent/users/Jan-2015/…	mailing-listx_refsource_MLIST
http://www.debian.org/security/2015/dsa-3119	vendor-advisoryx_refsource_DEBIAN

Date Public

2015-01-05 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.
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

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Action not permitted

CNVD-2015-05782

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

Tags

Sightings

Nomenclature

Related by attack behaviour