Vulnerability-Lookup

CNVD-2018-06246

Vulnerability from cnvd - Published: 2018-03-26

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

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

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{
  "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 – Updated: 2024-08-05 06:24

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.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

14 references

URL	Tags
https://www.debian.org/security/2018/dsa-4221	vendor-advisoryx_refsource_DEBIAN
https://usn.ubuntu.com/3618-1/	vendor-advisoryx_refsource_UBUNTU
https://github.com/LibVNC/libvncserver/issues/218	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
http://www.securityfocus.com/bid/103107	vdb-entryx_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-advisoryx_refsource_REDHAT
https://security.gentoo.org/glsa/201908-05	vendor-advisoryx_refsource_GENTOO
https://lists.debian.org/debian-lts-announce/2019…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2019…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2019…	mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4547-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4573-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4587-1/	vendor-advisoryx_refsource_UBUNTU

Date Public

2018-02-19 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.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
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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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CNVD-2018-06246

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

Tags

Sightings

Nomenclature

Related by attack behaviour