Vulnerability-Lookup

CNVD-2018-07040

Vulnerability from cnvd - Published: 2018-04-04

Title

libgit2整数溢出漏洞

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之前的版本中的index.c:read_entry()函数在解压缩压缩前缀长度时存在整数溢出漏洞。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（越界读取）。

Severity

中

Patch Name

libgit2整数溢出漏洞的补丁

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之前的版本中的index.c:read_entry()函数在解压缩压缩前缀长度时存在整数溢出漏洞。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（越界读取）。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/3db1af1f370295ad5355b8f64b865a2a357bcac0

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-8098

Impacted products

Name
libgit2 libgit2 <v0.26.2

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-8098"
    }
  },
  "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\u4e2d\u7684index.c:read_entry()\u51fd\u6570\u5728\u89e3\u538b\u7f29\u538b\u7f29\u524d\u7f00\u957f\u5ea6\u65f6\u5b58\u5728\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\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\uff08\u8d8a\u754c\u8bfb\u53d6\uff09\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/3db1af1f370295ad5355b8f64b865a2a357bcac0",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-07040",
  "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\u4e2d\u7684index.c:read_entry()\u51fd\u6570\u5728\u89e3\u538b\u7f29\u538b\u7f29\u524d\u7f00\u957f\u5ea6\u65f6\u5b58\u5728\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\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\uff08\u8d8a\u754c\u8bfb\u53d6\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": "libgit2\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "libgit2 libgit2 \u003cv0.26.2"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-8098",
  "serverity": "\u4e2d",
  "submitTime": "2018-03-14",
  "title": "libgit2\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2018-8098 (GCVE-0-2018-8098)

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

Summary

Integer overflow in the index.c:read_entry() function while decompressing a compressed prefix length in libgit2 before v0.26.2 allows an attacker to cause a denial of service (out-of-bounds read) via a crafted repository index file.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://github.com/libgit2/libgit2/commit/3207ddb…	x_refsource_CONFIRM
https://libgit2.github.com/security/	x_refsource_CONFIRM
https://github.com/libgit2/libgit2/commit/3db1af1…	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

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            "url": "https://libgit2.github.com/security/"
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            "url": "https://github.com/libgit2/libgit2/commit/3db1af1f370295ad5355b8f64b865a2a357bcac0"
          },
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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.

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.

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Action not permitted

CNVD-2018-07040

CVE-2018-8098 (GCVE-0-2018-8098)

Tags

Sightings

Nomenclature

Related by attack behaviour