Vulnerability-Lookup

CNVD-2021-07319

Vulnerability from cnvd - Published: 2021-01-29

Title

Mozilla Firefox存在未明漏洞（CNVD-2021-07319）

Description

Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox 中存在安全漏洞。当在表包装器上使用flex-basis时，StyleGenericFlexBasis对象可能会被错误地转换为错误的类型。这将导致堆用户释放、内存损坏和潜在可利用的崩溃。目前没有详细漏洞细节提供。

Severity

中

Patch Name

Mozilla Firefox存在未明漏洞（CNVD-2021-07319）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://www.mozilla.org/en-US/security/advisories/mfsa2020-54/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-26974

Impacted products

Name
['Mozilla Firefox <84', 'Mozilla Thunderbird <78.6', 'Mozilla Firefox ESR <78.6']

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JSON

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{
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    "cve": {
      "cveNumber": "CVE-2020-26974",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-26974"
    }
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  "description": "Mozilla Firefox\u662f\u7f8e\u56fdMozilla\u57fa\u91d1\u4f1a\u7684\u4e00\u6b3e\u5f00\u6e90Web\u6d4f\u89c8\u5668\u3002\n\nMozilla Firefox \u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u5f53\u5728\u8868\u5305\u88c5\u5668\u4e0a\u4f7f\u7528flex-basis\u65f6\uff0cStyleGenericFlexBasis\u5bf9\u8c61\u53ef\u80fd\u4f1a\u88ab\u9519\u8bef\u5730\u8f6c\u6362\u4e3a\u9519\u8bef\u7684\u7c7b\u578b\u3002\u8fd9\u5c06\u5bfc\u81f4\u5806\u7528\u6237\u91ca\u653e\u3001\u5185\u5b58\u635f\u574f\u548c\u6f5c\u5728\u53ef\u5229\u7528\u7684\u5d29\u6e83\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-07319",
  "openTime": "2021-01-29",
  "patchDescription": "Mozilla Firefox\u662f\u7f8e\u56fdMozilla\u57fa\u91d1\u4f1a\u7684\u4e00\u6b3e\u5f00\u6e90Web\u6d4f\u89c8\u5668\u3002\r\n\r\nMozilla Firefox \u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u5f53\u5728\u8868\u5305\u88c5\u5668\u4e0a\u4f7f\u7528flex-basis\u65f6\uff0cStyleGenericFlexBasis\u5bf9\u8c61\u53ef\u80fd\u4f1a\u88ab\u9519\u8bef\u5730\u8f6c\u6362\u4e3a\u9519\u8bef\u7684\u7c7b\u578b\u3002\u8fd9\u5c06\u5bfc\u81f4\u5806\u7528\u6237\u91ca\u653e\u3001\u5185\u5b58\u635f\u574f\u548c\u6f5c\u5728\u53ef\u5229\u7528\u7684\u5d29\u6e83\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\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": "Mozilla Firefox\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-07319\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Mozilla Firefox \u003c84",
      "Mozilla Thunderbird \u003c78.6",
      "Mozilla Firefox ESR \u003c78.6"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-26974",
  "serverity": "\u4e2d",
  "submitTime": "2020-12-21",
  "title": "Mozilla Firefox\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-07319\uff09"
}

CVE-2020-26974 (GCVE-0-2020-26974)

Vulnerability from cvelistv5 – Published: 2021-01-07 13:52 – Updated: 2024-08-04 16:03

Summary

When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.

Severity

No CVSS data available.

CWE

Incorrect cast of StyleGenericFlexBasis resulted in a heap use-after-free

Assigner

mozilla mitre root

References

4 references

URL	Tags
https://www.mozilla.org/security/advisories/mfsa2…	x_refsource_MISC
https://www.mozilla.org/security/advisories/mfsa2…	x_refsource_MISC
https://www.mozilla.org/security/advisories/mfsa2…	x_refsource_MISC
https://bugzilla.mozilla.org/show_bug.cgi?id=1681022	x_refsource_MISC

Impacted products

3 products

Vendor	Product	Version
Mozilla	Firefox	Affected: unspecified , < 84 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 78.6 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 78.6 (custom)

Show details on NVD website

JSON

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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.

Detection rules are retrieved from Rulezet.

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.

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CNVD-2021-07319

CVE-2020-26974 (GCVE-0-2020-26974)

Tags

Sightings

Nomenclature

Related by attack behaviour