Vulnerability-Lookup

CNVD-2020-05097

Vulnerability from cnvd - Published: 2020-02-13

Title

WeeChat缓冲区溢出漏洞

Description

WeeChat是一个快速、轻量级及可扩展的聊天客户端，可在多种平台运行，如Linux、Unix、BSD、GNU Hurd、Mac OS X及Windows。 WeeChat 2.7及之前版本中的plugins/irc/irc-mode.c文件的irc_mode_channel_update存在缓冲区溢出漏洞。远程攻击者可利用该漏洞造成拒绝服务（应用程序崩溃）。

Severity

中

Patch Name

WeeChat缓冲区溢出漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://weechat.org/doc/security/

Reference

https://github.com/weechat/weechat/commit/6f4f147d8e86adf9ad34a8ffd7e7f1f23a7e74da https://nvd.nist.gov/vuln/detail/CVE-2020-8955

Impacted products

Name
WeeChat WeeChat <=2.7

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-8955"
    }
  },
  "description": "WeeChat\u662f\u4e00\u4e2a\u5feb\u901f\u3001\u8f7b\u91cf\u7ea7\u53ca\u53ef\u6269\u5c55\u7684\u804a\u5929\u5ba2\u6237\u7aef\uff0c\u53ef\u5728\u591a\u79cd\u5e73\u53f0\u8fd0\u884c\uff0c\u5982Linux\u3001Unix\u3001BSD\u3001GNU Hurd\u3001Mac OS X\u53caWindows\u3002\n\nWeeChat 2.7\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u7684plugins/irc/irc-mode.c\u6587\u4ef6\u7684irc_mode_channel_update\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\uff09\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://weechat.org/doc/security/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-05097",
  "openTime": "2020-02-13",
  "patchDescription": "WeeChat\u662f\u4e00\u4e2a\u5feb\u901f\u3001\u8f7b\u91cf\u7ea7\u53ca\u53ef\u6269\u5c55\u7684\u804a\u5929\u5ba2\u6237\u7aef\uff0c\u53ef\u5728\u591a\u79cd\u5e73\u53f0\u8fd0\u884c\uff0c\u5982Linux\u3001Unix\u3001BSD\u3001GNU Hurd\u3001Mac OS X\u53caWindows\u3002\r\n\r\nWeeChat 2.7\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u7684plugins/irc/irc-mode.c\u6587\u4ef6\u7684irc_mode_channel_update\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\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": "WeeChat\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "WeeChat WeeChat \u003c=2.7"
  },
  "referenceLink": "https://github.com/weechat/weechat/commit/6f4f147d8e86adf9ad34a8ffd7e7f1f23a7e74da\r\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-8955",
  "serverity": "\u4e2d",
  "submitTime": "2020-02-13",
  "title": "WeeChat\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2020-8955 (GCVE-0-2020-8955)

Vulnerability from cvelistv5 – Published: 2020-02-12 21:58 – Updated: 2024-08-04 10:19

Summary

irc_mode_channel_update in plugins/irc/irc-mode.c in WeeChat through 2.7 allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a malformed IRC message 324 (channel mode).

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

9 references

URL	Tags
https://weechat.org/doc/security/	x_refsource_MISC
https://github.com/weechat/weechat/commit/6f4f147…	x_refsource_MISC
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://security.gentoo.org/glsa/202003-51	vendor-advisoryx_refsource_GENTOO
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

To clipboard

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          },
          {
            "name": "[debian-lts-announce] 20200324 [SECURITY] [DLA 2157-1] weechat 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.

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

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.