Vulnerability-Lookup

CNVD-2021-07542

Vulnerability from cnvd - Published: 2021-01-31

Title

Mozilla Firefox拒绝服务漏洞（CNVD-2021-07542）

Description

Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox 85.0版本之前存在安全漏洞。该漏洞源于对重新声明的JavaScript变量执行垃圾回收会导致中毒后使用，并可能使应用崩溃。目前没有详细的漏洞细节提供。

Severity

高

Patch Name

Mozilla Firefox拒绝服务漏洞（CNVD-2021-07542）的补丁

Patch Description

Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox 85.0版本之前存在安全漏洞。该漏洞源于对重新声明的JavaScript变量执行垃圾回收会导致中毒后使用，并可能使应用崩溃。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://www.mozilla.org/en-US/security/advisories/mfsa2021-03

Reference

https://access.redhat.com/security/cve/cve-2021-23960

Impacted products

Name
Mozilla Firefox <85.0

Show details on source website

JSON

To clipboard

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    "cve": {
      "cveNumber": "CVE-2021-23960",
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-07542",
  "openTime": "2021-01-31",
  "patchDescription": "Mozilla Firefox\u662f\u7f8e\u56fdMozilla\u57fa\u91d1\u4f1a\u7684\u4e00\u6b3e\u5f00\u6e90Web\u6d4f\u89c8\u5668\u3002\r\n\r\nMozilla Firefox 85.0\u7248\u672c\u4e4b\u524d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9\u91cd\u65b0\u58f0\u660e\u7684JavaScript\u53d8\u91cf\u6267\u884c\u5783\u573e\u56de\u6536\u4f1a\u5bfc\u81f4\u4e2d\u6bd2\u540e\u4f7f\u7528\uff0c\u5e76\u53ef\u80fd\u4f7f\u5e94\u7528\u5d29\u6e83\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": "Mozilla Firefox\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-07542\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Mozilla Firefox \u003c85.0"
  },
  "referenceLink": "https://access.redhat.com/security/cve/cve-2021-23960",
  "serverity": "\u9ad8",
  "submitTime": "2021-01-29",
  "title": "Mozilla Firefox\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-07542\uff09"
}

CVE-2021-23960 (GCVE-0-2021-23960)

Vulnerability from cvelistv5 – Published: 2021-02-26 02:05 – Updated: 2024-08-03 19:14

Summary

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

Severity

No CVSS data available.

CWE

Use-after-poison for incorrectly redeclared JavaScript variables during GC

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=1675755	x_refsource_MISC

Impacted products

3 products

Vendor	Product	Version
Mozilla	Firefox	Affected: < 85
Mozilla	Thunderbird	Affected: < 78.7
Mozilla	Firefox ESR	Affected: < 78.7

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.

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.