Vulnerability-Lookup

CNVD-2019-06643

Vulnerability from cnvd - Published: 2019-03-09

Title

libgit2整数溢出漏洞（CNVD-2019-06643）

Description

libgit2是一个可移植、使用C语言实现的Git核心开发包。 libgit2 0.27.3之前版本中的delta.c文件的‘git_delta_apply’函数存在整数溢出漏洞，攻击者可利用该漏洞泄露内存地址或造成拒绝服务（越界读取）。

Severity

中

Patch Name

libgit2整数溢出漏洞（CNVD-2019-06643）的补丁

Patch Description

libgit2是一个可移植、使用C语言实现的Git核心开发包。 libgit2 0.27.3之前版本中的delta.c文件的‘git_delta_apply’函数存在整数溢出漏洞，攻击者可利用该漏洞泄露内存地址或造成拒绝服务（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

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/libgit2/libgit2/commit/3f461902dc1072acb8b7607ee65d0a0458ffac2a

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-10887

Impacted products

Name
libgit2 libgit2 <0.27.3

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-10887"
    }
  },
  "description": "libgit2\u662f\u4e00\u4e2a\u53ef\u79fb\u690d\u3001\u4f7f\u7528C\u8bed\u8a00\u5b9e\u73b0\u7684Git\u6838\u5fc3\u5f00\u53d1\u5305\u3002\n\nlibgit2 0.27.3\u4e4b\u524d\u7248\u672c\u4e2d\u7684delta.c\u6587\u4ef6\u7684\u2018git_delta_apply\u2019\u51fd\u6570\u5b58\u5728\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6cc4\u9732\u5185\u5b58\u5730\u5740\u6216\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u8d8a\u754c\u8bfb\u53d6\uff09\u3002",
  "discovererName": "Riccardo Schirone",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/libgit2/libgit2/commit/3f461902dc1072acb8b7607ee65d0a0458ffac2a",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-06643",
  "openTime": "2019-03-09",
  "patchDescription": "libgit2\u662f\u4e00\u4e2a\u53ef\u79fb\u690d\u3001\u4f7f\u7528C\u8bed\u8a00\u5b9e\u73b0\u7684Git\u6838\u5fc3\u5f00\u53d1\u5305\u3002\r\n\r\nlibgit2 0.27.3\u4e4b\u524d\u7248\u672c\u4e2d\u7684delta.c\u6587\u4ef6\u7684\u2018git_delta_apply\u2019\u51fd\u6570\u5b58\u5728\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6cc4\u9732\u5185\u5b58\u5730\u5740\u6216\u9020\u6210\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\uff08CNVD-2019-06643\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "libgit2 libgit2 \u003c0.27.3"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-10887",
  "serverity": "\u4e2d",
  "submitTime": "2018-07-11",
  "title": "libgit2\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2019-06643\uff09"
}

CVE-2018-10887 (GCVE-0-2018-10887)

Vulnerability from cvelistv5 – Published: 2018-07-10 14:00 – Updated: 2024-09-17 01:06

Summary

A flaw was found in libgit2 before version 0.27.3. It has been discovered that an unexpected sign extension in git_delta_apply function in delta.c file may lead to an integer overflow which in turn leads to an out of bound read, allowing to read before the base object. An attacker may use this flaw to leak memory addresses or cause a Denial of Service.

Severity

No CVSS data available.

CWE

CWE-194 - >CWE-190->CWE-125

Assigner

redhat redhat root

References

6 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1598021	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
https://github.com/libgit2/libgit2/releases/tag/v0.27.3	x_refsource_CONFIRM
https://github.com/libgit2/libgit2/commit/c157711…	x_refsource_CONFIRM
https://github.com/libgit2/libgit2/commit/3f46190…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version
libgit2	libgit2	Affected: before version 0.27.3

Date Public

2018-07-09 00:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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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.
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Action not permitted

CNVD-2019-06643

CVE-2018-10887 (GCVE-0-2018-10887)

Tags

Sightings

Nomenclature

Related by attack behaviour