Vulnerability-Lookup

CNVD-2019-02666

Vulnerability from cnvd - Published: 2019-01-24

Title

xkbcommon空指针解引用漏洞（CNVD-2019-02666）

Description

xkbcommon是一个键盘键映射编译器和支持库。 xkbcommon0.8.1之前版本中的xkbcomp/keycodes.c文件的‘ CopyKeyAliasesToKeymap’函数存在空指针解引用漏洞，该漏洞源于程序在处理无效别名时未能检查是否使用空指针，本地攻击者可通过提交特制的keymap文件利用该漏洞造成xkbcommon解析器崩溃（空指针逆向引用）。

Severity

低

Patch Name

xkbcommon空指针解引用漏洞（CNVD-2019-02666）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-15858

Impacted products

Name
xkbcommon xkbcommon <0.8.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-15858"
    }
  },
  "description": "xkbcommon\u662f\u4e00\u4e2a\u952e\u76d8\u952e\u6620\u5c04\u7f16\u8bd1\u5668\u548c\u652f\u6301\u5e93\u3002\n\nxkbcommon0.8.1\u4e4b\u524d\u7248\u672c\u4e2d\u7684xkbcomp/keycodes.c\u6587\u4ef6\u7684\u2018 CopyKeyAliasesToKeymap\u2019\u51fd\u6570\u5b58\u5728\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5728\u5904\u7406\u65e0\u6548\u522b\u540d\u65f6\u672a\u80fd\u68c0\u67e5\u662f\u5426\u4f7f\u7528\u7a7a\u6307\u9488\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u63d0\u4ea4\u7279\u5236\u7684keymap\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210xkbcommon\u89e3\u6790\u5668\u5d29\u6e83\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\uff09\u3002",
  "discovererName": "whot",
  "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/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-02666",
  "openTime": "2019-01-24",
  "patchDescription": "xkbcommon\u662f\u4e00\u4e2a\u952e\u76d8\u952e\u6620\u5c04\u7f16\u8bd1\u5668\u548c\u652f\u6301\u5e93\u3002\r\n\r\nxkbcommon0.8.1\u4e4b\u524d\u7248\u672c\u4e2d\u7684xkbcomp/keycodes.c\u6587\u4ef6\u7684\u2018 CopyKeyAliasesToKeymap\u2019\u51fd\u6570\u5b58\u5728\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5728\u5904\u7406\u65e0\u6548\u522b\u540d\u65f6\u672a\u80fd\u68c0\u67e5\u662f\u5426\u4f7f\u7528\u7a7a\u6307\u9488\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u63d0\u4ea4\u7279\u5236\u7684keymap\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210xkbcommon\u89e3\u6790\u5668\u5d29\u6e83\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\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": "xkbcommon\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\uff08CNVD-2019-02666\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "xkbcommon xkbcommon \u003c0.8.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-15858",
  "serverity": "\u4f4e",
  "submitTime": "2018-08-27",
  "title": "xkbcommon\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\uff08CNVD-2019-02666\uff09"
}

CVE-2018-15858 (GCVE-0-2018-15858)

Vulnerability from cvelistv5 – Published: 2018-08-25 21:00 – Updated: 2024-08-05 10:10

Summary

Unchecked NULL pointer usage when handling invalid aliases in CopyKeyAliasesToKeymap in xkbcomp/keycodes.c in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

5 references

URL	Tags
https://github.com/xkbcommon/libxkbcommon/commit/…	x_refsource_MISC
https://security.gentoo.org/glsa/201810-05	vendor-advisoryx_refsource_GENTOO
https://usn.ubuntu.com/3786-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3786-2/	vendor-advisoryx_refsource_UBUNTU
https://lists.freedesktop.org/archives/wayland-de…	x_refsource_MISC

Date Public

2018-08-25 00:00

Show details on NVD website

JSON

To clipboard

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            "url": "https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f"
          },
          {
            "name": "GLSA-201810-05",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/201810-05"
          },
          {
            "name": "USN-3786-1",
            "tags": [
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              "x_refsource_UBUNTU",
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            "url": "https://usn.ubuntu.com/3786-1/"
          },
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              "x_transferred"
            ],
            "url": "https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html"
          }
        ],
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    "cna": {
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          "versions": [
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        "dateUpdated": "2018-11-07T10:57:01.000Z",
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          "name": "GLSA-201810-05",
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        },
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        },
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          ],
          "url": "https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html"
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    "dateReserved": "2018-08-24T00:00:00.000Z",
    "dateUpdated": "2024-08-05T10:10:05.434Z",
    "state": "PUBLISHED"
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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.
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-2019-02666

CVE-2018-15858 (GCVE-0-2018-15858)

Tags

Sightings

Nomenclature

Related by attack behaviour