Vulnerability-Lookup

CNVD-2021-70118

Vulnerability from cnvd - Published: 2021-09-11

Title

WeeChat缓冲区溢出漏洞（CNVD-2021-70118）

Description

WeeChat是一款可扩展的即时聊天客户端应用程序。 WeeChat 存在安全漏洞，该漏洞源于 3.2.1 版本之前的 WeeChat 允许远程攻击者通过精心制作的 WebSocket 框架触发 Relay 插件中 plugins/relay/relay-websocket.c中的越界读取，导致拒绝服务（崩溃）。目前没有详细的漏洞细节提供。

Severity

中

Patch Name

WeeChat缓冲区溢出漏洞（CNVD-2021-70118）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/8b1331f98de1714bae15a9ca2e2b393ba49d735b

Impacted products

Name
WeeChat WeeChat >=0.4.1，<3.2.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-40516"
    }
  },
  "description": "WeeChat\u662f\u4e00\u6b3e\u53ef\u6269\u5c55\u7684\u5373\u65f6\u804a\u5929\u5ba2\u6237\u7aef\u5e94\u7528\u7a0b\u5e8f\u3002\n\nWeeChat \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e 3.2.1 \u7248\u672c\u4e4b\u524d\u7684 WeeChat \u5141\u8bb8\u8fdc\u7a0b\u653b\u51fb\u8005\u901a\u8fc7\u7cbe\u5fc3\u5236\u4f5c\u7684 WebSocket \u6846\u67b6\u89e6\u53d1 Relay \u63d2\u4ef6\u4e2d plugins/relay/relay-websocket.c\u4e2d\u7684\u8d8a\u754c\u8bfb\u53d6\uff0c\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\uff08\u5d29\u6e83\uff09\u3002 \u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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-2021-70118",
  "openTime": "2021-09-11",
  "patchDescription": "WeeChat\u662f\u4e00\u6b3e\u53ef\u6269\u5c55\u7684\u5373\u65f6\u804a\u5929\u5ba2\u6237\u7aef\u5e94\u7528\u7a0b\u5e8f\u3002\r\n\r\nWeeChat \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e 3.2.1 \u7248\u672c\u4e4b\u524d\u7684 WeeChat \u5141\u8bb8\u8fdc\u7a0b\u653b\u51fb\u8005\u901a\u8fc7\u7cbe\u5fc3\u5236\u4f5c\u7684 WebSocket \u6846\u67b6\u89e6\u53d1 Relay \u63d2\u4ef6\u4e2d plugins/relay/relay-websocket.c\u4e2d\u7684\u8d8a\u754c\u8bfb\u53d6\uff0c\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\uff08\u5d29\u6e83\uff09\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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\uff08CNVD-2021-70118\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "WeeChat WeeChat \u003e=0.4.1\uff0c\u003c3.2.1"
  },
  "referenceLink": "https://github.com/weechat/weechat/commit/8b1331f98de1714bae15a9ca2e2b393ba49d735b",
  "serverity": "\u4e2d",
  "submitTime": "2021-09-07",
  "title": "WeeChat\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-70118\uff09"
}

CVE-2021-40516 (GCVE-0-2021-40516)

Vulnerability from cvelistv5 – Published: 2021-09-05 17:14 – Updated: 2024-08-04 02:44

Summary

WeeChat before 3.2.1 allows remote attackers to cause a denial of service (crash) via a crafted WebSocket frame that trigger an out-of-bounds read in plugins/relay/relay-websocket.c in the Relay plugin.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://weechat.org/doc/security/	x_refsource_MISC
https://github.com/weechat/weechat/commit/8b1331f…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T02:44:10.836Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://weechat.org/doc/security/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/weechat/weechat/commit/8b1331f98de1714bae15a9ca2e2b393ba49d735b"
          },
          {
            "name": "[debian-lts-announce] 20210930 [SECURITY] [DLA 2770-1] weechat security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/09/msg00018.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "WeeChat before 3.2.1 allows remote attackers to cause a denial of service (crash) via a crafted WebSocket frame that trigger an out-of-bounds read in plugins/relay/relay-websocket.c in the Relay plugin."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-09-30T13:06:12.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://weechat.org/doc/security/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/weechat/weechat/commit/8b1331f98de1714bae15a9ca2e2b393ba49d735b"
        },
        {
          "name": "[debian-lts-announce] 20210930 [SECURITY] [DLA 2770-1] weechat security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/09/msg00018.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-40516",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "WeeChat before 3.2.1 allows remote attackers to cause a denial of service (crash) via a crafted WebSocket frame that trigger an out-of-bounds read in plugins/relay/relay-websocket.c in the Relay plugin."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://weechat.org/doc/security/",
              "refsource": "MISC",
              "url": "https://weechat.org/doc/security/"
            },
            {
              "name": "https://github.com/weechat/weechat/commit/8b1331f98de1714bae15a9ca2e2b393ba49d735b",
              "refsource": "MISC",
              "url": "https://github.com/weechat/weechat/commit/8b1331f98de1714bae15a9ca2e2b393ba49d735b"
            },
            {
              "name": "[debian-lts-announce] 20210930 [SECURITY] [DLA 2770-1] weechat security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2021/09/msg00018.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-40516",
    "datePublished": "2021-09-05T17:14:24.000Z",
    "dateReserved": "2021-09-05T00:00:00.000Z",
    "dateUpdated": "2024-08-04T02:44:10.836Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.1"
}

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.