CVE-2023-6208
Quick assessment
Affected
Mozilla Firefox
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是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox 120之前版本、Firefox ESR 115.5之前版本和Thunderbird 115.5.0之前版本存在安全漏洞，该漏洞源于使用选择API会将内容错误地复制到X11主选择中。
Possible ATT&CK Techniques 1 AI
T1005 · Data from Local System
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I. Basic Information for CVE-2023-6208
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard.
*This bug only affects Firefox on X11. Other systems are unaffected.* This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
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 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 120之前版本、Firefox ESR 115.5之前版本和Thunderbird 115.5.0之前版本存在安全漏洞，该漏洞源于使用选择API会将内容错误地复制到X11主选择中。
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 | unspecified ~ 120 | - |
|
| Mozilla | Firefox ESR | unspecified ~ 115.5.0 | - |
|
| Mozilla | Thunderbird | unspecified ~ 115.5 | - |
|
II. Public POCs for CVE-2023-6208
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2023-6208 (4)
Mailing List Discussions for CVE-2023-6208 (2)
Same Patch Batch · Mozilla · 2023-11-21 · 12 CVEs total
| CVE-2023-49061 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-49060 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6212 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6213 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6209 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6210 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6211 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6205 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6206 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6207 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6204 | Mozilla Firefox 安全漏洞 |
IV. Related Vulnerabilities
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CVE-2026-100828
Mitigation bypass in the Bookmarks & History component
Same vendor: Mozilla
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CVE-2026-103500
Heap buffer overflow opening large email -
CVE-2026-100832
Use-after-free in the Graphics: Canvas2D component -
CVE-2026-100830
Mitigation bypass in the DOM: Navigation component -
CVE-2026-100831
Use-after-free in the DOM: UI Events & Focus Handling compon -
CVE-2026-100829
Mitigation bypass in the DOM: Security component
V. Comments for CVE-2023-6208
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