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CVE-2021-29977

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 存在缓冲区错误漏洞，该漏洞源于处理 HTML 内容时的边界错误。攻击者可利用该漏洞创建一个特制的网页，诱骗受害者打开它，触发内存损坏并在目标系统上执行任意代码。

AI Predicted 8.7 Difficulty: Moderate EPSS 1.01% · P60
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I. Basic Information for CVE-2021-29977

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Mozilla developers reported memory safety bugs present in Firefox 89. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 90.
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 缓冲区错误漏洞
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 存在缓冲区错误漏洞，该漏洞源于处理 HTML 内容时的边界错误。攻击者可利用该漏洞创建一个特制的网页，诱骗受害者打开它，触发内存损坏并在目标系统上执行任意代码。
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 ~ 90 -

II. Public POCs for CVE-2021-29977

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III. Intelligence Information for CVE-2021-29977

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Vendor Advisories for CVE-2021-29977 (3)

Same Patch Batch · Mozilla · 2021-08-05 · 10 CVEs total

CVE-2021-29978 Mozilla VPN 安全特征问题漏洞
CVE-2021-29976 Mozilla Firefox 缓冲区错误漏洞
CVE-2021-29975 Mozilla Firefox 安全漏洞
CVE-2021-29974 Mozilla Firefox 权限许可和访问控制问题漏洞
CVE-2021-29973 Mozilla Firefox 安全漏洞
CVE-2021-29972 Mozilla Firefox 资源管理错误漏洞
CVE-2021-29971 Mozilla Firefox 权限许可和访问控制问题漏洞
CVE-2021-29970 Mozilla Thunderbird 资源管理错误漏洞
CVE-2021-29969 Mozilla Thunderbird 命令注入漏洞

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2021-29977

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