cnvd - cnvd-2018-06246

cnvd-2018-06246

Vulnerability from cnvd

Title: libVNCserver 'rfbserver.c'整数溢出漏洞

Description:

LibVNCServer是一款VNC服务器的应用库。

libVNCserver 'rfbserver.c'存在整数溢出漏洞。该漏洞是由于 rfbserver.crfbProcessClientNormalMessage()未能过滤msg.cct.length，攻击者可以利用漏洞在受影响的应用程序上下文中执行任意代码。失败的开发尝试可能会导致拒绝服务条件。

Severity: 高

Patch Name: libVNCserver 'rfbserver.c'整数溢出漏洞的补丁

Patch Description:

LibVNCServer是一款VNC服务器的应用库。

libVNCserver 'rfbserver.c'存在整数溢出漏洞。该漏洞是由于 rfbserver.crfbProcessClientNormalMessage()未能过滤msg.cct.length，攻击者可以利用漏洞在受影响的应用程序上下文中执行任意代码。失败的开发尝试可能会导致拒绝服务条件。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:

用户可参考如下厂商提供的安全补丁以修复该漏洞： https://github.com/LibVNC/libvncserver/issues/218

Reference: https://github.com/LibVNC/libvncserver/issues/218 https://www.securityfocus.com/bid/103107

Impacted products

Name
['LibVNCServer LibVNCServer 0.9.11', 'LibVNCServer LibVNCServer 0.9.10', 'LibVNCServer LibVNCServer 0.9.9', 'LibVNCServer LibVNCServer 0.9.8']

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "103107"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-7225"
    }
  },
  "description": "LibVNCServer\u662f\u4e00\u6b3eVNC\u670d\u52a1\u5668\u7684\u5e94\u7528\u5e93\u3002\r\n\r\nlibVNCserver \u0027rfbserver.c\u0027\u5b58\u5728\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u662f\u7531\u4e8e rfbserver.crfbProcessClientNormalMessage()\u672a\u80fd\u8fc7\u6ee4msg.cct.length\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u6f0f\u6d1e\u5728\u53d7\u5f71\u54cd\u7684\u5e94\u7528\u7a0b\u5e8f\u4e0a\u4e0b\u6587\u4e2d\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002\u5931\u8d25\u7684\u5f00\u53d1\u5c1d\u8bd5\u53ef\u80fd\u4f1a\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u6761\u4ef6\u3002",
  "discovererName": "Solar Designer",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u5382\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u8865\u4e01\u4ee5\u4fee\u590d\u8be5\u6f0f\u6d1e\uff1a\r\nhttps://github.com/LibVNC/libvncserver/issues/218",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-06246",
  "openTime": "2018-03-26",
  "patchDescription": "LibVNCServer\u662f\u4e00\u6b3eVNC\u670d\u52a1\u5668\u7684\u5e94\u7528\u5e93\u3002\r\n\r\nlibVNCserver \u0027rfbserver.c\u0027\u5b58\u5728\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u662f\u7531\u4e8e rfbserver.crfbProcessClientNormalMessage()\u672a\u80fd\u8fc7\u6ee4msg.cct.length\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u6f0f\u6d1e\u5728\u53d7\u5f71\u54cd\u7684\u5e94\u7528\u7a0b\u5e8f\u4e0a\u4e0b\u6587\u4e2d\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002\u5931\u8d25\u7684\u5f00\u53d1\u5c1d\u8bd5\u53ef\u80fd\u4f1a\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u6761\u4ef6\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 \u0027rfbserver.c\u0027\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "LibVNCServer LibVNCServer 0.9.11",
      "LibVNCServer LibVNCServer 0.9.10",
      "LibVNCServer LibVNCServer 0.9.9",
      "LibVNCServer LibVNCServer 0.9.8"
    ]
  },
  "referenceLink": "https://github.com/LibVNC/libvncserver/issues/218\r\nhttps://www.securityfocus.com/bid/103107",
  "serverity": "\u9ad8",
  "submitTime": "2018-03-02",
  "title": "libVNCserver \u0027rfbserver.c\u0027\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2018-7225 (GCVE-0-2018-7225)

Vulnerability from cvelistv5

Published

2018-02-19 15:00

Modified

2024-08-05 06:24

Severity ?

CWE

Summary

An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.

References

▼	URL	Tags
	https://www.debian.org/security/2018/dsa-4221	vendor-advisory, x_refsource_DEBIAN
	https://usn.ubuntu.com/3618-1/	vendor-advisory, x_refsource_UBUNTU
	https://github.com/LibVNC/libvncserver/issues/218	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2018/03/msg00035.html	mailing-list, x_refsource_MLIST
	http://www.securityfocus.com/bid/103107	vdb-entry, x_refsource_BID
	http://www.openwall.com/lists/oss-security/2018/02/18/1	x_refsource_MISC
	https://access.redhat.com/errata/RHSA-2018:1055	vendor-advisory, x_refsource_REDHAT
	https://security.gentoo.org/glsa/201908-05	vendor-advisory, x_refsource_GENTOO
	https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html	mailing-list, x_refsource_MLIST
	https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html	mailing-list, x_refsource_MLIST
	https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html	mailing-list, x_refsource_MLIST
	https://usn.ubuntu.com/4547-1/	vendor-advisory, x_refsource_UBUNTU
	https://usn.ubuntu.com/4573-1/	vendor-advisory, x_refsource_UBUNTU
	https://usn.ubuntu.com/4587-1/	vendor-advisory, x_refsource_UBUNTU

Impacted products

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

Show details on NVD website

JSON

To clipboard

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          "name": "[debian-lts-announce] 20191221 [SECURITY] [DLA 2045-1] tightvnc security update",
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    "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.

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