CVE-2021-23984
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I. Basic Information for CVE-2021-23984
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
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 Firefox 安全漏洞
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 存在安全漏洞，目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
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 ESR | unspecified ~ 78.9 | - | |
| Mozilla | Firefox | unspecified ~ 87 | - | |
| Mozilla | Thunderbird | unspecified ~ 78.9 | - |
II. Public POCs for CVE-2021-23984
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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- https://bugzilla.mozilla.org/show_bug.cgi?id=1693664x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-12/x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-10/x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-11/x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-23984
Same Patch Batch · Mozilla · 2021-03-31 · 8 CVEs total
| CVE-2021-23981 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-23982 | Mozilla Firefox 加密问题漏洞 | |
| CVE-2021-23983 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-23985 | Mozilla Firefox 安全漏洞 | |
| CVE-2021-23986 | Mozilla Firefox 访问控制错误漏洞 | |
| CVE-2021-23987 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-23988 | Mozilla Firefox 缓冲区错误漏洞 |
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-2021-23984
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