Vulnerability Details : CVE-2017-7838
Punycode format text will be displayed for entire qualified international domain names in some instances when a sub-domain triggers the punycode display instead of the primary domain being displayed in native script and the sub-domain only displaying as punycode. This could be used for limited spoofing attacks due to user confusion. This vulnerability affects Firefox < 57.
Vulnerability category: Input validation
Exploit prediction scoring system (EPSS) score for CVE-2017-7838
Probability of exploitation activity in the next 30 days: 0.26%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 63 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-7838
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST |
|
5.3
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2017-7838
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-7838
-
http://www.securitytracker.com/id/1039803
Mozilla Firefox Multiple Bugs Let Remote Users Spoof URLs, Conduct Cross-Site Scripting Attacks, Bypass Security Controls, Obtain Potentially Sensitive Information, and Execute Arbitrary Code and LetVDB Entry;Third Party Advisory
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https://bugzilla.mozilla.org/show_bug.cgi?id=1399540
1399540 - (CVE-2017-7838) Mozilla Firefox IDN display vulnerabilityIssue Tracking;Permissions Required
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http://www.securityfocus.com/bid/101832
Mozilla Firefox Prior to 57 Multiple Security VulnerabilitiesThird Party Advisory;VDB Entry
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https://www.mozilla.org/security/advisories/mfsa2017-24/
Security vulnerabilities fixed in Firefox 57 — MozillaVendor Advisory
Products affected by CVE-2017-7838
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*