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CVE-2020-26974

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 中存在缓冲区错误漏洞。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。以下产品和版本受到影响：Firefox < 84、Thunderbird < 78.6和Firefox ESR < 78.6

AI Predicted 8.8 Difficulty: Easy EPSS 1.46% · P71

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-26974

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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.
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 中存在缓冲区错误漏洞。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。以下产品和版本受到影响：Firefox < 84、Thunderbird < 78.6和Firefox ESR < 78.6
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 ~ 84 -
Mozilla Thunderbird unspecified ~ 78.6 -
Mozilla Firefox ESR unspecified ~ 78.6 -

II. Public POCs for CVE-2020-26974

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III. Intelligence Information for CVE-2020-26974

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Vendor Advisories for CVE-2020-26974 (4)

Same Patch Batch · Mozilla · 2021-01-07 · 13 CVEs total

CVE-2020-26971 Mozilla Firefox 缓冲区错误漏洞
CVE-2020-26972 Mozilla Firefox 资源管理错误漏洞
CVE-2020-26973 Mozilla Firefox 安全漏洞
CVE-2020-26975 Mozilla Firefox 安全漏洞
CVE-2020-26976 Mozilla Firefox 安全漏洞
CVE-2020-26977 Mozilla Firefox 安全漏洞
CVE-2020-26978 Mozilla Firefox 信息泄露漏洞
CVE-2020-26979 Mozilla Firefox 输入验证错误漏洞
CVE-2020-35111 Mozilla Firefox 安全漏洞
CVE-2020-35112 Mozilla Firefox 安全漏洞
CVE-2020-35113 Mozilla Firefox 缓冲区错误漏洞
CVE-2020-35114 Mozilla Firefox 缓冲区错误漏洞

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2020-26974

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