6.1med
CVE-2017-7839
Control characters prepended before "javascript:" URLs pasted in the addressbar can cause the leading characters to be ignored and the past…
Published 8 y ago · modified 4 mo ago · JSON
CVSS
6.1
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.1%
percentile 66%
Public exploits
0
none known
Summary
Control characters prepended before "javascript:" URLs pasted in the addressbar can cause the leading characters to be ignored and the pasted JavaScript to be executed instead of being blocked. This could be used in social engineering and self-cross-site-scripting (self-XSS) attacks where users are convinced to copy and paste text into the addressbar. This vulnerability affects Firefox < 57.
Exploit prediction (EPSS)
1.12% probability of exploitation in the next 30 days, higher than 66% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.0 | 6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- Mozilla Firefox
Classification
- Weakness
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
- bugzilla.mozilla.org /show_bug.cgi?id=1402896 · x_refsource_CONFIRM, x_transferred
- mozilla.org /security/advisories/mfsa2017-24/ · x_refsource_CONFIRM, x_transferred
- securityfocus.com /bid/101832 · vdb-entry, x_refsource_BID, x_transferred
- securitytracker.com /id/1039803 · vdb-entry, x_refsource_SECTRACK, x_transferred
Sources
- CVE List: CVE-2017-7839
- NVD: CVE-2017-7839
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