CVE-2017-7839 — Vulnetix

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CVE-2017-7839 PUBLISHED

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.

EPSS 0.63% · 70.2th percentile

Risk Scores

EPSS Score

0.63%

70.2th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:18.04:LTS	firefox	0, 56.0+build6-0ubuntu1
Ubuntu:16.04:LTS	firefox	42.0+build2-0ubuntu1, 44.0+build3-0ubuntu2, 44.0.1+build1-0ubuntu1
Ubuntu:14.04:LTS	firefox	43.0.4+build3-0ubuntu0.14.04.1, 44.0+build3-0ubuntu0.14.04.1, 44.0.1+build2-0ubuntu0.14.04.1

Timeline

Nov 15, 2017 CVE Published
Apr 14, 2021 EPSS Score
Jun 22, 2021 EPSS Score
Aug 23, 2021 EPSS Score
Oct 24, 2021 EPSS Score
Dec 25, 2021 EPSS Score
Feb 25, 2022 EPSS Score
Apr 28, 2022 EPSS Score
Jun 29, 2022 EPSS Score
Nov 1, 2022 EPSS Score
Jan 2, 2023 EPSS Score
Mar 5, 2023 EPSS Score

References

https://ubuntu.com/security/CVE-2017-7839 third-party-advisory
https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/ third-party-advisory
https://ubuntu.com/security/notices/USN-3477-1 vendor-advisory
https://www.cve.org/CVERecord?id=CVE-2017-7839 third-party-advisory

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