Vulnerability-Lookup

CNVD-2019-05290

Vulnerability from cnvd - Published: 2019-02-26

Title

libvterm拒绝服务漏洞

Description

libvterm是一款实现了VT220或xterm终端仿真器的C99库。 libvterm 0+bzr726及之前版本（用于Vim和其他设备）中存在拒绝服务漏洞，该漏洞程序未能正确地处理内存不足的情况，攻击者可利用该漏洞造成拒绝服务（应用程序崩溃）。

Severity

中

Patch Name

libvterm拒绝服务漏洞的补丁

Patch Description

libvterm是一款实现了VT220或xterm终端仿真器的C99库。 libvterm 0+bzr726及之前版本（用于Vim和其他设备）中存在拒绝服务漏洞，该漏洞程序未能正确地处理内存不足的情况，攻击者可利用该漏洞造成拒绝服务（应用程序崩溃）。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/vim/vim/commit/cd929f7ba8cc5b6d6dcf35c8b34124e969fed6b8

Reference

https://github.com/vim/vim/issues/3711 https://github.com/vim/vim/commit/cd929f7ba8cc5b6d6dcf35c8b34124e969fed6b8 https://nvd.nist.gov/vuln/detail/CVE-2018-20786

Impacted products

Name
libvterm libvterm <=0+bzr726

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-20786"
    }
  },
  "description": "libvterm\u662f\u4e00\u6b3e\u5b9e\u73b0\u4e86VT220\u6216xterm\u7ec8\u7aef\u4eff\u771f\u5668\u7684C99\u5e93\u3002\n\nlibvterm 0+bzr726\u53ca\u4e4b\u524d\u7248\u672c\uff08\u7528\u4e8eVim\u548c\u5176\u4ed6\u8bbe\u5907\uff09\u4e2d\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5730\u5904\u7406\u5185\u5b58\u4e0d\u8db3\u7684\u60c5\u51b5\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\uff09\u3002",
  "discovererName": "unknown",
  "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/vim/vim/commit/cd929f7ba8cc5b6d6dcf35c8b34124e969fed6b8",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-05290",
  "openTime": "2019-02-26",
  "patchDescription": "libvterm\u662f\u4e00\u6b3e\u5b9e\u73b0\u4e86VT220\u6216xterm\u7ec8\u7aef\u4eff\u771f\u5668\u7684C99\u5e93\u3002\r\n\r\nlibvterm 0+bzr726\u53ca\u4e4b\u524d\u7248\u672c\uff08\u7528\u4e8eVim\u548c\u5176\u4ed6\u8bbe\u5907\uff09\u4e2d\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5730\u5904\u7406\u5185\u5b58\u4e0d\u8db3\u7684\u60c5\u51b5\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\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": "libvterm\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "libvterm libvterm \u003c=0+bzr726"
  },
  "referenceLink": "https://github.com/vim/vim/issues/3711\r\nhttps://github.com/vim/vim/commit/cd929f7ba8cc5b6d6dcf35c8b34124e969fed6b8\r\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-20786",
  "serverity": "\u4e2d",
  "submitTime": "2019-02-25",
  "title": "libvterm\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2018-20786 (GCVE-0-2018-20786)

Vulnerability from cvelistv5 – Published: 2019-02-24 14:00 – Updated: 2024-08-05 12:12

Summary

libvterm through 0+bzr726, as used in Vim and other products, mishandles certain out-of-memory conditions, leading to a denial of service (application crash), related to screen.c, state.c, and vterm.c.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://github.com/vim/vim/commit/cd929f7ba8cc5b6…	x_refsource_MISC
https://github.com/vim/vim/issues/3711	x_refsource_MISC
https://usn.ubuntu.com/4309-1/	vendor-advisoryx_refsource_UBUNTU

Date Public

2019-02-24 00:00

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-05T12:12:27.626Z",
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        "references": [
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            "tags": [
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            ],
            "url": "https://github.com/vim/vim/commit/cd929f7ba8cc5b6d6dcf35c8b34124e969fed6b8"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/vim/vim/issues/3711"
          },
          {
            "name": "USN-4309-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4309-1/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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      "descriptions": [
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          "lang": "en",
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        }
      ],
      "problemTypes": [
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      "providerMetadata": {
        "dateUpdated": "2020-03-30T19:06:06.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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      },
      "references": [
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          "tags": [
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          ],
          "url": "https://github.com/vim/vim/commit/cd929f7ba8cc5b6d6dcf35c8b34124e969fed6b8"
        },
        {
          "tags": [
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          "url": "https://github.com/vim/vim/issues/3711"
        },
        {
          "name": "USN-4309-1",
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            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4309-1/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2018-20786",
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        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
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  "cveMetadata": {
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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.

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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2019-05290

CVE-2018-20786 (GCVE-0-2018-20786)

Tags

Sightings

Nomenclature

Related by attack behaviour