cnvd - cnvd-2020-64301

cnvd-2020-64301

Vulnerability from cnvd

Title: Mozilla Firefox MCallGetProperty代码问题漏洞

Description:

Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。

Mozilla Firefox存在安全漏洞，攻击者可利用该漏洞通过Firefox的MCallGetProperty强制使用释放的内存区域，以触发拒绝服务，并可能运行代码。

Severity: 高

Patch Name: Mozilla Firefox MCallGetProperty代码问题漏洞的补丁

Patch Description:

Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。

Mozilla Firefox存在安全漏洞，攻击者可利用该漏洞通过Firefox的MCallGetProperty强制使用释放的内存区域，以触发拒绝服务，并可能运行代码。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/mfsa2020-49/

Reference: https://vigilance.fr/vulnerability/Firefox-use-after-free-via-MCallGetProperty-33859

Impacted products

Name
Mozilla Firefox

Show details on source website

JSON

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{
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    "cve": {
      "cveNumber": "CVE-2020-26950",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-26950"
    }
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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\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7Firefox\u7684MCallGetProperty\u5f3a\u5236\u4f7f\u7528\u91ca\u653e\u7684\u5185\u5b58\u533a\u57df\uff0c\u4ee5\u89e6\u53d1\u62d2\u7edd\u670d\u52a1\uff0c\u5e76\u53ef\u80fd\u8fd0\u884c\u4ee3\u7801\u3002",
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-64301",
  "openTime": "2020-11-19",
  "patchDescription": "Mozilla Firefox\u662f\u7f8e\u56fdMozilla\u57fa\u91d1\u4f1a\u7684\u4e00\u6b3e\u5f00\u6e90Web\u6d4f\u89c8\u5668\u3002\r\n\r\nMozilla Firefox\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7Firefox\u7684MCallGetProperty\u5f3a\u5236\u4f7f\u7528\u91ca\u653e\u7684\u5185\u5b58\u533a\u57df\uff0c\u4ee5\u89e6\u53d1\u62d2\u7edd\u670d\u52a1\uff0c\u5e76\u53ef\u80fd\u8fd0\u884c\u4ee3\u7801\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 MCallGetProperty\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Mozilla Firefox"
  },
  "referenceLink": "https://vigilance.fr/vulnerability/Firefox-use-after-free-via-MCallGetProperty-33859",
  "serverity": "\u9ad8",
  "submitTime": "2020-11-10",
  "title": "Mozilla Firefox MCallGetProperty\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2020-26950 (GCVE-0-2020-26950)

Vulnerability from cvelistv5

Published

2020-12-09 00:19

Modified

2024-08-04 16:03

Severity ?

CWE

Write side effects in MCallGetProperty opcode not accounted for

Summary

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.

References

▼	URL	Tags
	https://bugzilla.mozilla.org/show_bug.cgi?id=1675905	x_refsource_MISC
	https://www.mozilla.org/security/advisories/mfsa2020-49/	x_refsource_CONFIRM
	http://packetstormsecurity.com/files/166175/Firefox-MCallGetProperty-Write-Side-Effects-Use-After-Free.html	x_refsource_MISC

Impacted products

Vendor

Product

Version

▼

Mozilla

Firefox

Version: < 82.0.3

	Mozilla	Firefox ESR	Version: < 78.4.1
	Mozilla	Thunderbird	Version: < 78.4.2

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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