Vulnerability-Lookup

CNVD-2018-07041

Vulnerability from cnvd - Published: 2018-04-04

Title

libgit2双重释放漏洞

Description

libgit2是一个可移植、纯C语言实现的Git核心开发包，你可以使用它来编写自定义的Git应用。 libgit2 0.26.2之前的版本存在双重释放漏洞。该漏洞产生的原因是index.c:read_entry()函数未能正确的错误代码返回。攻击者可通过特制存储库索引文件利用该漏洞导致拒绝服务。

Severity

中

Patch Name

libgit2双重释放漏洞的补丁

Patch Description

libgit2是一个可移植、纯C语言实现的Git核心开发包，你可以使用它来编写自定义的Git应用。 libgit2 0.26.2之前的版本存在双重释放漏洞。该漏洞产生的原因是index.c:read_entry()函数未能正确的错误代码返回。攻击者可通过特制存储库索引文件利用该漏洞导致拒绝服务。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

厂商已发布漏洞修复程序，请及时关注更新： https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fe

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-8099

Impacted products

Name
libgit2 libgit2 <v0.26.2

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-8099"
    }
  },
  "description": "libgit2\u662f\u4e00\u4e2a\u53ef\u79fb\u690d\u3001\u7eafC\u8bed\u8a00\u5b9e\u73b0\u7684Git\u6838\u5fc3\u5f00\u53d1\u5305\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u7f16\u5199\u81ea\u5b9a\u4e49\u7684Git\u5e94\u7528\u3002\r\n\r\nlibgit2 0.26.2\u4e4b\u524d\u7684\u7248\u672c\u5b58\u5728\u53cc\u91cd\u91ca\u653e\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662findex.c:read_entry()\u51fd\u6570\u672a\u80fd\u6b63\u786e\u7684\u9519\u8bef\u4ee3\u7801\u8fd4\u56de\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u7279\u5236\u5b58\u50a8\u5e93\u7d22\u5f15\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "discovererName": "unknown",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fe",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-07041",
  "openTime": "2018-04-04",
  "patchDescription": "libgit2\u662f\u4e00\u4e2a\u53ef\u79fb\u690d\u3001\u7eafC\u8bed\u8a00\u5b9e\u73b0\u7684Git\u6838\u5fc3\u5f00\u53d1\u5305\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u7f16\u5199\u81ea\u5b9a\u4e49\u7684Git\u5e94\u7528\u3002\r\n\r\nlibgit2 0.26.2\u4e4b\u524d\u7684\u7248\u672c\u5b58\u5728\u53cc\u91cd\u91ca\u653e\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662findex.c:read_entry()\u51fd\u6570\u672a\u80fd\u6b63\u786e\u7684\u9519\u8bef\u4ee3\u7801\u8fd4\u56de\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u7279\u5236\u5b58\u50a8\u5e93\u7d22\u5f15\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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": "libgit2\u53cc\u91cd\u91ca\u653e\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "libgit2 libgit2 \u003cv0.26.2"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-8099",
  "serverity": "\u4e2d",
  "submitTime": "2018-03-14",
  "title": "libgit2\u53cc\u91cd\u91ca\u653e\u6f0f\u6d1e"
}

CVE-2018-8099 (GCVE-0-2018-8099)

Vulnerability from cvelistv5 – Published: 2018-03-14 00:00 – Updated: 2024-08-05 06:46

Summary

Incorrect returning of an error code in the index.c:read_entry() function leads to a double free in libgit2 before v0.26.2, which allows an attacker to cause a denial of service via a crafted repository index file.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://libgit2.github.com/security/	x_refsource_CONFIRM
https://github.com/libgit2/libgit2/commit/58a6fe9…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST

Date Public

2018-03-13 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T06:46:12.249Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://libgit2.github.com/security/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fe"
          },
          {
            "name": "[debian-lts-announce] 20220321 [SECURITY] [DLA 2936-1] libgit2 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2018-03-13T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Incorrect returning of an error code in the index.c:read_entry() function leads to a double free in libgit2 before v0.26.2, which allows an attacker to cause a denial of service via a crafted repository index file."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-03-21T02:06:16.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://libgit2.github.com/security/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fe"
        },
        {
          "name": "[debian-lts-announce] 20220321 [SECURITY] [DLA 2936-1] libgit2 security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2018-8099",
          "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": "Incorrect returning of an error code in the index.c:read_entry() function leads to a double free in libgit2 before v0.26.2, which allows an attacker to cause a denial of service via a crafted repository index file."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://libgit2.github.com/security/",
              "refsource": "CONFIRM",
              "url": "https://libgit2.github.com/security/"
            },
            {
              "name": "https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fe",
              "refsource": "CONFIRM",
              "url": "https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fe"
            },
            {
              "name": "[debian-lts-announce] 20220321 [SECURITY] [DLA 2936-1] libgit2 security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2018-8099",
    "datePublished": "2018-03-14T00:00:00.000Z",
    "dateReserved": "2018-03-13T00:00:00.000Z",
    "dateUpdated": "2024-08-05T06:46:12.249Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "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.

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.

Action not permitted

CNVD-2018-07041

CVE-2018-8099 (GCVE-0-2018-8099)

Tags

Sightings

Nomenclature

Related by attack behaviour