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CVE-2021-38502

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 Thunderbird是美国Mozilla基金会的一套从Mozilla Application Suite独立出来的电子邮件客户端软件。该软件支持IMAP、POP邮件协议以及HTML邮件格式。 Mozilla Thunderbird 中存在安全漏洞，该漏洞源于产品在SMTP连接中忽略的STARTTLS的设置。攻击者可通过该漏洞访问敏感数据。以下产品及版本受到影响：Mozilla Thunderbird 91.0, 91.0.1 至 91.0.3 版本，Mozilla Thunderbird

AI Predicted 8.1 Difficulty: Easy EPSS 1.07% · P62

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-38502

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the MITM. If an unprotected authentication method was configured, the MITM could obtain the authentication credentials, too. This vulnerability affects Thunderbird < 91.2.
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 Thunderbird 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Thunderbird是美国Mozilla基金会的一套从Mozilla Application Suite独立出来的电子邮件客户端软件。该软件支持IMAP、POP邮件协议以及HTML邮件格式。 Mozilla Thunderbird 中存在安全漏洞，该漏洞源于产品在SMTP连接中忽略的STARTTLS的设置。攻击者可通过该漏洞访问敏感数据。以下产品及版本受到影响：Mozilla Thunderbird 91.0, 91.0.1 至 91.0.3 版本，Mozilla Thunderbird
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 ~ 91.2 -

II. Public POCs for CVE-2021-38502

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III. Intelligence Information for CVE-2021-38502

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Vendor Advisories for CVE-2021-38502 (3)

Mailing List Discussions for CVE-2021-38502 (1)

Same Patch Batch · Mozilla · 2021-11-03 · 14 CVEs total

CVE-2021-38501 Mozilla Firefox 缓冲区错误漏洞
CVE-2021-38500 Mozilla Firefox 缓冲区错误漏洞
CVE-2021-38499 Mozilla Firefox 缓冲区错误漏洞
CVE-2021-38498 Mozilla Firefox 资源管理错误漏洞
CVE-2021-38497 Mozilla Firefox 访问控制错误漏洞
CVE-2021-38496 Mozilla Firefox MessageTask 资源管理错误漏洞
CVE-2021-38495 Mozilla Firefox 缓冲区错误漏洞
CVE-2021-38494 Mozilla Firefox 缓冲区错误漏洞
CVE-2021-38493 Mozilla Firefox 缓冲区错误漏洞
CVE-2021-38492 Mozilla Firefox 输入验证错误漏洞
CVE-2021-38491 Mozilla Firefox 权限许可和访问控制问题漏洞
CVE-2021-29993 Mozilla Firefox 权限许可和访问控制问题漏洞
CVE-2021-29991 Mozilla Firefox和Mozilla Thunderbird 安全漏洞

IV. Related Vulnerabilities

Same product: Thunderbird
Same vendor: Mozilla

V. Comments for CVE-2021-38502

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