cnvd - cnvd-2019-02661

cnvd-2019-02661

Vulnerability from cnvd

Title: xkbcommon空指针解引用漏洞（CNVD-2019-02661）

Description:

xkbcommon是一个键盘键映射编译器和支持库。

xkbcommon0.8.1之前版本中存在空指针解引用漏洞，该漏洞源于程序错误地处理了xkb_geometry部分的XkbFile，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-2019-02661）的补丁

Patch Description:

xkbcommon是一个键盘键映射编译器和支持库。

xkbcommon0.8.1之前版本中存在空指针解引用漏洞，该漏洞源于程序错误地处理了xkb_geometry部分的XkbFile，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）。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/xkbcommon/libxkbcommon/commit/917636b1d0d70205a13f89062b95e3a0fc31d4ff

Reference: https://nvd.nist.gov/vuln/detail/CVE-2018-15855

Impacted products

Name
xkbcommon xkbcommon <0.8.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-15855"
    }
  },
  "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\u5b58\u5728\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u9519\u8bef\u5730\u5904\u7406\u4e86xkb_geometry\u90e8\u5206\u7684XkbFile\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": "bluetech",
  "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/917636b1d0d70205a13f89062b95e3a0fc31d4ff",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-02661",
  "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\u5b58\u5728\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u9519\u8bef\u5730\u5904\u7406\u4e86xkb_geometry\u90e8\u5206\u7684XkbFile\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-2019-02661\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "xkbcommon xkbcommon \u003c0.8.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-15855",
  "serverity": "\u4f4e",
  "submitTime": "2018-08-27",
  "title": "xkbcommon\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\uff08CNVD-2019-02661\uff09"
}

CVE-2018-15855 (GCVE-0-2018-15855)

Vulnerability from cvelistv5

Published

2018-08-25 21:00

Modified

2024-08-05 10:10

Severity ?

CWE

Summary

Unchecked NULL pointer usage 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, because the XkbFile for an xkb_geometry section was mishandled.

References

▼	URL	Tags
	https://security.gentoo.org/glsa/201810-05	vendor-advisory, x_refsource_GENTOO
	https://usn.ubuntu.com/3786-1/	vendor-advisory, x_refsource_UBUNTU
	https://usn.ubuntu.com/3786-2/	vendor-advisory, x_refsource_UBUNTU
	https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html	x_refsource_MISC
	https://github.com/xkbcommon/libxkbcommon/commit/917636b1d0d70205a13f89062b95e3a0fc31d4ff	x_refsource_MISC
	https://access.redhat.com/errata/RHSA-2019:2079	vendor-advisory, x_refsource_REDHAT

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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          "dateUpdated": "2024-08-05T10:10:04.916Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
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          },
          {
            "name": "USN-3786-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3786-1/"
          },
          {
            "name": "USN-3786-2",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
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            ],
            "url": "https://usn.ubuntu.com/3786-2/"
          },
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              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html"
          },
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://github.com/xkbcommon/libxkbcommon/commit/917636b1d0d70205a13f89062b95e3a0fc31d4ff"
          },
          {
            "name": "RHSA-2019:2079",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2019:2079"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
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          "lang": "en",
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        }
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      "providerMetadata": {
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          "name": "GLSA-201810-05",
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            "x_refsource_GENTOO"
          ],
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        },
        {
          "name": "USN-3786-1",
          "tags": [
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            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3786-1/"
        },
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          "name": "USN-3786-2",
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        },
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          "url": "https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html"
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          "url": "https://github.com/xkbcommon/libxkbcommon/commit/917636b1d0d70205a13f89062b95e3a0fc31d4ff"
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              "url": "https://usn.ubuntu.com/3786-2/"
            },
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              "refsource": "MISC",
              "url": "https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html"
            },
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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