CVE-2021-23993
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I. Basic Information for CVE-2021-23993
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An attacker may perform a DoS attack to prevent a user from sending encrypted email to a correspondent. If an attacker creates a crafted OpenPGP key with a subkey that has an invalid self signature, and the Thunderbird user imports the crafted key, then Thunderbird may try to use the invalid subkey, but the RNP library rejects it from being used, causing encryption to fail. This vulnerability affects Thunderbird < 78.9.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mozilla Thunderbird 数据伪造问题漏洞
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 78.9.1之前版本存在数据伪造问题漏洞，攻击者可以发出经过身份验证的HTTP请求来触发此漏洞。导致加密失败。
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 ~ 78.9.1 | - |
II. Public POCs for CVE-2021-23993
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://www.mozilla.org/security/advisories/mfsa2021-13/x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1666360x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-23993
Same Patch Batch · Mozilla · 2021-06-24 · 37 CVEs total
| CVE-2021-24000 | Mozilla Firefox 竞争条件问题漏洞 | |
| CVE-2021-29949 | Mozilla Thunderbird 代码问题漏洞 | |
| CVE-2021-29948 | Mozilla Thunderbird 竞争条件问题漏洞 | |
| CVE-2021-29947 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-29946 | Mozilla Firefox 输入验证错误漏洞 | |
| CVE-2021-29945 | Mozilla Thunderbird 安全漏洞 | |
| CVE-2021-29944 | Mozilla Firefox 和 Thunderbird 跨站脚本漏洞 | |
| CVE-2021-24002 | Mozilla Thunderbird 注入漏洞 | |
| CVE-2021-24001 | Mozilla Firefox 权限许可和访问控制问题漏洞 | |
| CVE-2021-29950 | Mozilla Thunderbird 安全漏洞 | |
| CVE-2021-23999 | Mozilla Firefox 安全漏洞 | |
| CVE-2021-23998 | Mozilla Firefox 数据伪造问题漏洞 | |
| CVE-2021-23997 | Mozilla Firefox 资源管理错误漏洞 | |
| CVE-2021-23996 | Mozilla Firefox和Mozilla Thunderbird 安全漏洞 | |
| CVE-2021-23995 | Mozilla Thunderbird 资源管理错误漏洞 | |
| CVE-2021-23994 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-23992 | Mozilla Thunderbird 数据伪造问题漏洞 | |
| CVE-2021-23991 | Mozilla Thunderbird 安全漏洞 | |
| CVE-2021-29959 | Mozilla Firefox权限许可和访问控制问题漏洞 | |
| CVE-2021-29967 | Mozilla Firefox 缓冲区错误漏洞 |
Showing top 20 of 37 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: Mozilla
- CVE-2026-8093
Memory safety bugs fixed in Thunderbird 150.0.2 - CVE-2026-8094
Other issue in the WebRTC component - CVE-2026-8092
Memory safety bugs fixed in Thunderbird ESR 140.10.2 and Thu - CVE-2026-8091
Incorrect boundary conditions in the Audio/Video: Playback c - CVE-2026-8090
Use-after-free in the DOM: Networking component
V. Comments for CVE-2021-23993
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