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CVE-2021-43539

Quick assessment

Affected
Mozilla Thunderbird
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 ESR是美国Mozilla基金会的Firefox(Web浏览器)的一个延长支持版本。 Mozilla Firefox ESR存在资源管理错误漏洞，该漏洞源于在wasm实例调用中正确记录活动指针的位置失败，导致在调用中发生GC，而没有跟踪那些活动指针。这可能会导致使用后无导致潜在的利用崩溃。此漏洞影响雷鸟< 91.4.0,Firefox ESR < 91.4.0和Firefox < 95。

AI Predicted 7.8 Difficulty: Moderate EPSS 1.62% · P74

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2021-43539

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
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 ESR 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox ESR是美国Mozilla基金会的Firefox(Web浏览器)的一个延长支持版本。 Mozilla Firefox ESR存在资源管理错误漏洞，该漏洞源于在wasm实例调用中正确记录活动指针的位置失败，导致在调用中发生GC，而没有跟踪那些活动指针。这可能会导致使用后无导致潜在的利用崩溃。此漏洞影响雷鸟< 91.4.0,Firefox ESR < 91.4.0和Firefox < 95。
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 Thunderbird unspecified ~ 91.4.0 -
Mozilla Firefox ESR unspecified ~ 91.4.0 -
Mozilla Firefox unspecified ~ 95 -

II. Public POCs for CVE-2021-43539

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-43539

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Vendor Advisories for CVE-2021-43539 (8)

Mailing List Discussions for CVE-2021-43539 (2)

Same Patch Batch · Mozilla · 2021-12-08 · 27 CVEs total

CVE-2021-43534 Mozilla Firefox 缓冲区错误漏洞
CVE-2021-43527 Mozilla Network Security Services 缓冲区错误漏洞
CVE-2021-43546 Mozilla Firefox 安全漏洞
CVE-2021-43545 Mozilla Firefox 安全漏洞
CVE-2021-43544 Mozilla Firefox 跨站脚本漏洞
CVE-2021-43543 Mozilla Firefox 跨站脚本漏洞
CVE-2021-43542 Mozilla Firefox ESR 信息泄露漏洞
CVE-2021-43541 Mozilla Firefox ESR 安全漏洞
CVE-2021-43540 Mozilla Firefox 权限许可和访问控制问题漏洞
CVE-2021-43538 Mozilla Firefox 竞争条件问题漏洞
CVE-2021-43537 Mozilla Firefox ESR 代码问题漏洞
CVE-2021-43536 Mozilla Firefox ESR 信息泄露漏洞
CVE-2021-43535 Mozilla Firefox 资源管理错误漏洞
CVE-2021-38503 Mozilla Firefox 安全特征问题漏洞
CVE-2021-43533 Mozilla Firefox 安全漏洞
CVE-2021-43532 Mozilla Firefox 输入验证错误漏洞
CVE-2021-43531 Mozilla Firefox 访问控制错误漏洞
CVE-2021-43530 Mozilla Firefox 跨站脚本漏洞
CVE-2021-43528 Mozilla Thunderbird 安全特征问题漏洞
CVE-2021-38510 Mozilla Firefox 命令注入漏洞

Showing top 20 of 27 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Thunderbird
Same vendor: Mozilla

V. Comments for CVE-2021-43539

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