cnvd - cnvd-2020-36785

cnvd-2020-36785

Vulnerability from cnvd

Title: LibVNCServer存在未明漏洞（CNVD-2020-36785）

Description:

LibVNCServer是一款支持在程序中实现VNC（虚拟网络计算）服务器或客户端功能的跨平台C语言库。

LibVNCServer 0.9.13之前版本中存在安全漏洞。攻击者可借助libvncclient/rfbproto.c文件的uint32_t指针利用该漏洞访问字节对齐的数据。

Severity: 中

Patch Name: LibVNCServer存在未明漏洞（CNVD-2020-36785）的补丁

Patch Description:

LibVNCServer是一款支持在程序中实现VNC（虚拟网络计算）服务器或客户端功能的跨平台C语言库。

LibVNCServer 0.9.13之前版本中存在安全漏洞。攻击者可借助libvncclient/rfbproto.c文件的uint32_t指针利用该漏洞访问字节对齐的数据。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:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/LibVNC/libvncserver/commit/23e5cbe6b090d7f22982aee909a6a618174d3c2d

Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-14399

Impacted products

Name
LibVNCServer LibVNCServer <0.9.13

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-14399"
    }
  },
  "description": "LibVNCServer\u662f\u4e00\u6b3e\u652f\u6301\u5728\u7a0b\u5e8f\u4e2d\u5b9e\u73b0VNC\uff08\u865a\u62df\u7f51\u7edc\u8ba1\u7b97\uff09\u670d\u52a1\u5668\u6216\u5ba2\u6237\u7aef\u529f\u80fd\u7684\u8de8\u5e73\u53f0C\u8bed\u8a00\u5e93\u3002\n\nLibVNCServer 0.9.13\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9libvncclient/rfbproto.c\u6587\u4ef6\u7684uint32_t\u6307\u9488\u5229\u7528\u8be5\u6f0f\u6d1e\u8bbf\u95ee\u5b57\u8282\u5bf9\u9f50\u7684\u6570\u636e\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/LibVNC/libvncserver/commit/23e5cbe6b090d7f22982aee909a6a618174d3c2d",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-36785",
  "openTime": "2020-07-07",
  "patchDescription": "LibVNCServer\u662f\u4e00\u6b3e\u652f\u6301\u5728\u7a0b\u5e8f\u4e2d\u5b9e\u73b0VNC\uff08\u865a\u62df\u7f51\u7edc\u8ba1\u7b97\uff09\u670d\u52a1\u5668\u6216\u5ba2\u6237\u7aef\u529f\u80fd\u7684\u8de8\u5e73\u53f0C\u8bed\u8a00\u5e93\u3002\r\n\r\nLibVNCServer 0.9.13\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9libvncclient/rfbproto.c\u6587\u4ef6\u7684uint32_t\u6307\u9488\u5229\u7528\u8be5\u6f0f\u6d1e\u8bbf\u95ee\u5b57\u8282\u5bf9\u9f50\u7684\u6570\u636e\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": "LibVNCServer\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2020-36785\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "LibVNCServer LibVNCServer \u003c0.9.13"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-14399",
  "serverity": "\u4e2d",
  "submitTime": "2020-06-18",
  "title": "LibVNCServer\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2020-36785\uff09"
}

CVE-2020-14399 (GCVE-0-2020-14399)

Vulnerability from cvelistv5

Published

2020-06-17 15:12

Modified

2024-08-04 12:46

Severity ?

CWE

Summary

An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint32_t pointers in libvncclient/rfbproto.c. NOTE: there is reportedly "no trust boundary crossed.

References

▼	URL	Tags
	https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13	x_refsource_MISC
	https://github.com/LibVNC/libvncserver/commit/23e5cbe6b090d7f22982aee909a6a618174d3c2d	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2020/06/msg00035.html	mailing-list, x_refsource_MLIST
	http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html	vendor-advisory, x_refsource_SUSE
	http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html	vendor-advisory, x_refsource_SUSE
	http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html	vendor-advisory, x_refsource_SUSE
	https://usn.ubuntu.com/4434-1/	vendor-advisory, x_refsource_UBUNTU
	https://bugzilla.redhat.com/show_bug.cgi?id=1860354	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2020/08/msg00045.html	mailing-list, x_refsource_MLIST

Impacted products

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

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T12:46:34.416Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/LibVNC/libvncserver/commit/23e5cbe6b090d7f22982aee909a6a618174d3c2d"
          },
          {
            "name": "[debian-lts-announce] 20200630 [SECURITY] [DLA 2264-1] libvncserver security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00035.html"
          },
          {
            "name": "openSUSE-SU-2020:0988",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html"
          },
          {
            "name": "openSUSE-SU-2020:1025",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html"
          },
          {
            "name": "openSUSE-SU-2020:1056",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html"
          },
          {
            "name": "USN-4434-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4434-1/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1860354"
          },
          {
            "name": "[debian-lts-announce] 20200828 [SECURITY] [DLA 2347-1] libvncserver security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00045.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint32_t pointers in libvncclient/rfbproto.c. NOTE: there is reportedly \"no trust boundary crossed."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-08-28T23:06:06",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/LibVNC/libvncserver/commit/23e5cbe6b090d7f22982aee909a6a618174d3c2d"
        },
        {
          "name": "[debian-lts-announce] 20200630 [SECURITY] [DLA 2264-1] libvncserver security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00035.html"
        },
        {
          "name": "openSUSE-SU-2020:0988",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html"
        },
        {
          "name": "openSUSE-SU-2020:1025",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html"
        },
        {
          "name": "openSUSE-SU-2020:1056",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html"
        },
        {
          "name": "USN-4434-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4434-1/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1860354"
        },
        {
          "name": "[debian-lts-announce] 20200828 [SECURITY] [DLA 2347-1] libvncserver security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00045.html"
        }
      ],
      "tags": [
        "disputed"
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-14399",
          "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": "** DISPUTED ** An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint32_t pointers in libvncclient/rfbproto.c. NOTE: there is reportedly \"no trust boundary crossed.\""
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13",
              "refsource": "MISC",
              "url": "https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13"
            },
            {
              "name": "https://github.com/LibVNC/libvncserver/commit/23e5cbe6b090d7f22982aee909a6a618174d3c2d",
              "refsource": "MISC",
              "url": "https://github.com/LibVNC/libvncserver/commit/23e5cbe6b090d7f22982aee909a6a618174d3c2d"
            },
            {
              "name": "[debian-lts-announce] 20200630 [SECURITY] [DLA 2264-1] libvncserver security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00035.html"
            },
            {
              "name": "openSUSE-SU-2020:0988",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html"
            },
            {
              "name": "openSUSE-SU-2020:1025",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html"
            },
            {
              "name": "openSUSE-SU-2020:1056",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html"
            },
            {
              "name": "USN-4434-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4434-1/"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1860354",
              "refsource": "MISC",
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1860354"
            },
            {
              "name": "[debian-lts-announce] 20200828 [SECURITY] [DLA 2347-1] libvncserver security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00045.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-14399",
    "datePublished": "2020-06-17T15:12:57",
    "dateReserved": "2020-06-17T00:00:00",
    "dateUpdated": "2024-08-04T12:46:34.416Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Action not permitted