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CVE-2019-9821

Quick assessment

Affected
Mozilla Firefox
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox 67之前版本中的AssertWorkerThread存在资源管理错误漏洞，该漏洞源于网络系统或产品对系统资源（如内存、磁盘空间、文件等）的管理不当。

AI Predicted 5.0 Difficulty: Moderate EPSS 0.85% · P56

Possible ATT&CK Techniques 1 AI

T1480 · Execution Guardrails
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I. Basic Information for CVE-2019-9821

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A use-after-free vulnerability can occur in AssertWorkerThread due to a race condition with shared workers. This results in a potentially exploitable crash. This vulnerability affects Firefox < 67.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Mozilla Firefox 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox 67之前版本中的AssertWorkerThread存在资源管理错误漏洞，该漏洞源于网络系统或产品对系统资源（如内存、磁盘空间、文件等）的管理不当。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Mozilla Firefox unspecified ~ 67 -

II. Public POCs for CVE-2019-9821

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III. Intelligence Information for CVE-2019-9821

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Vendor Advisories for CVE-2019-9821 (2)

Same Patch Batch · Mozilla · 2019-07-23 · 48 CVEs total

CVE-2019-11695 Mozilla Firefox 输入验证错误漏洞
CVE-2019-11692 Mozilla Firefox 资源管理错误漏洞
CVE-2019-9820 Mozilla Firefox 资源管理错误漏洞
CVE-2019-9816 Mozilla Firefox 代码问题漏洞
CVE-2019-9815 Mozilla Firefox、Mozilla Firefox ESR和Mozilla Thunderbird 竞争条件问题漏洞
CVE-2019-9814 Mozilla Firefox 缓冲区错误漏洞
CVE-2019-9811 Mozilla Firefox ESR 注入漏洞
CVE-2019-9800 Mozilla Firefox 缓冲区错误漏洞
CVE-2019-9817 Mozilla Firefox 安全漏洞
CVE-2019-11694 Mozilla Firefox、Mozilla Firefox ESR和Mozilla Thunderbird 信息泄露漏洞
CVE-2019-11693 Mozilla Firefox 缓冲区错误漏洞
CVE-2019-11696 Mozilla Firefox 输入验证错误漏洞
CVE-2019-11697 Mozilla Firefox 输入验证错误漏洞
CVE-2019-11698 Mozilla Firefox 输入验证错误漏洞
CVE-2019-11699 Mozilla Firefox 输入验证错误漏洞
CVE-2019-11700 Mozilla Firefox 信息泄露漏洞
CVE-2019-11701 Mozilla Firefox 跨站脚本漏洞
CVE-2019-11702 Mozilla Firefox 信息泄露漏洞
CVE-2019-11703 Mozilla Thunderbird 缓冲区错误漏洞
CVE-2019-11704 Mozilla Thunderbird 缓冲区错误漏洞

Showing top 20 of 48 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2019-9821

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