Vulnerability-Lookup

CNVD-2019-40159

Vulnerability from cnvd - Published: 2019-11-12

Title

LibSass堆缓冲区过读漏洞（CNVD-2019-40159）

Description

LibSass是Sass编译器的C/C++实现。 LibSass 3.6.3之前版本中的ast_sel_weave.cpp中的Sass::weaveParents存在堆缓冲区过读漏洞。目前没有详细的漏洞细节提供。

Severity

中

Patch Name

LibSass堆缓冲区过读漏洞（CNVD-2019-40159）的补丁

Patch Description

LibSass是Sass编译器的C/C++实现。 LibSass 3.6.3之前版本中的ast_sel_weave.cpp中的Sass::weaveParents存在堆缓冲区过读漏洞。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

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/sass/libsass/pull/3027

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-18798

Impacted products

Name
LibSass LibSass <3.6.3

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-18798",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-18798"
    }
  },
  "description": "LibSass\u662fSass\u7f16\u8bd1\u5668\u7684C/C++\u5b9e\u73b0\u3002\n\nLibSass 3.6.3\u4e4b\u524d\u7248\u672c\u4e2d\u7684ast_sel_weave.cpp\u4e2d\u7684Sass::weaveParents\u5b58\u5728\u5806\u7f13\u51b2\u533a\u8fc7\u8bfb\u6f0f\u6d1e\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "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/sass/libsass/pull/3027",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-40159",
  "openTime": "2019-11-12",
  "patchDescription": "LibSass\u662fSass\u7f16\u8bd1\u5668\u7684C/C++\u5b9e\u73b0\u3002\r\n\r\nLibSass 3.6.3\u4e4b\u524d\u7248\u672c\u4e2d\u7684ast_sel_weave.cpp\u4e2d\u7684Sass::weaveParents\u5b58\u5728\u5806\u7f13\u51b2\u533a\u8fc7\u8bfb\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": "LibSass\u5806\u7f13\u51b2\u533a\u8fc7\u8bfb\u6f0f\u6d1e\uff08CNVD-2019-40159\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "LibSass LibSass \u003c3.6.3"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-18798",
  "serverity": "\u4e2d",
  "submitTime": "2019-11-07",
  "title": "LibSass\u5806\u7f13\u51b2\u533a\u8fc7\u8bfb\u6f0f\u6d1e\uff08CNVD-2019-40159\uff09"
}

CVE-2019-18798 (GCVE-0-2019-18798)

Vulnerability from cvelistv5 – Published: 2019-11-06 15:07 – Updated: 2024-08-05 02:02

Summary

LibSass before 3.6.3 allows a heap-based buffer over-read in Sass::weaveParents in ast_sel_weave.cpp.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/sass/libsass/issues/2999	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/sass/libsass/issues/2999"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
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      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sass/libsass/issues/2999"
        }
      ],
      "x_legacyV4Record": {
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          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2019-18798",
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                "product": {
                  "product_data": [
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                            "version_value": "n/a"
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            }
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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.

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Action not permitted

CNVD-2019-40159

CVE-2019-18798 (GCVE-0-2019-18798)

Tags

Sightings

Nomenclature

Related by attack behaviour