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CVE-2023-3417— File Extension Spoofing using the Text Direction Override Character

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 115.0.1之前版本存在安全漏洞，该漏洞源于允许攻击者使用文本方向覆盖Unicode字符进行文件扩展名欺骗。

AI Predicted 5.3 Difficulty: Easy EPSS 0.67% · P50

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes
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I. Basic Information for CVE-2023-3417

Vulnerability Information
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Vulnerability Title
File Extension Spoofing using the Text Direction Override Character
Source: CVE Program / CVE List V5
Vulnerability Description
Thunderbird allowed the Text Direction Override Unicode Character in filenames. An email attachment could be incorrectly shown as being a document file, while in fact it was an executable file. Newer versions of Thunderbird will strip the character and show the correct file extension. This vulnerability affects Thunderbird < 115.0.1 and Thunderbird < 102.13.1.
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 115.0.1之前版本存在安全漏洞，该漏洞源于允许攻击者使用文本方向覆盖Unicode字符进行文件扩展名欺骗。
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 ~ 115.0.1 -
Mozilla Thunderbird unspecified ~ 102.13.1 -

II. Public POCs for CVE-2023-3417

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III. Intelligence Information for CVE-2023-3417

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Vendor Advisories for CVE-2023-3417 (4)

Mailing List Discussions for CVE-2023-3417 (1)

IV. Related Vulnerabilities

Same product: Thunderbird
Same vendor: Mozilla

V. Comments for CVE-2023-3417

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