Vulnerability-Lookup

CNVD-2019-05092

Vulnerability from cnvd - Published: 2019-02-22

Title

LibVNC libvncclient/rfbproto.c文件堆越界写入漏洞

Description

LibVNC是一款用于实现VNC服务器和客户端功能的跨平台C库。 LibVNC 0.9.12之前版本中的libvncclient/rfbproto.c文件存在堆越界写入漏洞。目前没有详细的漏洞细节提供。

Severity

高

Patch Name

LibVNC libvncclient/rfbproto.c文件堆越界写入漏洞的补丁

Patch Description

LibVNC是一款用于实现VNC服务器和客户端功能的跨平台C库。 LibVNC 0.9.12之前版本中的libvncclient/rfbproto.c文件存在堆越界写入漏洞。目前没有详细的漏洞细节提供。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

厂商已发布漏洞修复程序，请及时关注更新： https://github.com/LibVNC/libvncserver/commit/a64c3b37af9a6c8f8009d7516874b8d266b42bae

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-20748

Impacted products

Name
LibVNC LibVNC <0.9.12

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-20748"
    }
  },
  "description": "LibVNC\u662f\u4e00\u6b3e\u7528\u4e8e\u5b9e\u73b0VNC\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u529f\u80fd\u7684\u8de8\u5e73\u53f0C\u5e93\u3002\n\nLibVNC 0.9.12\u4e4b\u524d\u7248\u672c\u4e2d\u7684libvncclient/rfbproto.c\u6587\u4ef6\u5b58\u5728\u5806\u8d8a\u754c\u5199\u5165\u6f0f\u6d1e\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "discovererName": "unknwon",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/LibVNC/libvncserver/commit/a64c3b37af9a6c8f8009d7516874b8d266b42bae",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-05092",
  "openTime": "2019-02-22",
  "patchDescription": "LibVNC\u662f\u4e00\u6b3e\u7528\u4e8e\u5b9e\u73b0VNC\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u529f\u80fd\u7684\u8de8\u5e73\u53f0C\u5e93\u3002\r\n\r\nLibVNC 0.9.12\u4e4b\u524d\u7248\u672c\u4e2d\u7684libvncclient/rfbproto.c\u6587\u4ef6\u5b58\u5728\u5806\u8d8a\u754c\u5199\u5165\u6f0f\u6d1e\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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": "LibVNC libvncclient/rfbproto.c\u6587\u4ef6\u5806\u8d8a\u754c\u5199\u5165\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "LibVNC LibVNC \u003c0.9.12"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-20748",
  "serverity": "\u9ad8",
  "submitTime": "2019-01-31",
  "title": "LibVNC libvncclient/rfbproto.c\u6587\u4ef6\u5806\u8d8a\u754c\u5199\u5165\u6f0f\u6d1e"
}

CVE-2018-20748 (GCVE-0-2018-20748)

Vulnerability from cvelistv5 – Published: 2019-01-30 18:00 – Updated: 2024-08-05 12:12

Summary

LibVNC before 0.9.12 contains multiple heap out-of-bounds write vulnerabilities in libvncclient/rfbproto.c. The fix for CVE-2018-20019 was incomplete.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2350 records in the last 180 days details

References

12 references

URL	Tags
https://lists.debian.org/debian-lts-announce/2019…	mailing-listx_refsource_MLIST
https://github.com/LibVNC/libvncserver/commit/a64…	x_refsource_MISC
https://github.com/LibVNC/libvncserver/commit/e34…	x_refsource_MISC
https://github.com/LibVNC/libvncserver/issues/273	x_refsource_MISC
https://github.com/LibVNC/libvncserver/commit/c5b…	x_refsource_MISC
https://github.com/LibVNC/libvncserver/commit/c2c…	x_refsource_MISC
https://usn.ubuntu.com/3877-1/	vendor-advisoryx_refsource_UBUNTU
https://www.openwall.com/lists/oss-security/2018/…	x_refsource_MISC
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/4587-1/	vendor-advisoryx_refsource_UBUNTU
https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_CONFIRM

Date Public

2019-01-30 00:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
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.

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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.
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