Input validation error - CVE-2017-5386
Published: June 11, 2018 / Updated: August 4, 2020
Vulnerability identifier: #VU33787
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-5386
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
WebExtension scripts can use the "data:" protocol to affect pages loaded by other web extensions using this protocol, leading to potential data disclosure or privilege escalation in affected extensions. This vulnerability affects Firefox ESR < 45.7 and Firefox < 51.
Affected software
Gentoo Linux
SUSE Linux
Slackware Linux
firefox-esr (Alpine package)
SUSE Linux
Slackware Linux
firefox-esr (Alpine package)
How to mitigate CVE-2017-5386
Install update from vendor's website.
firefox-esr (Alpine package) - update to 45.7.0-r0
External References
- http://rhn.redhat.com/errata/RHSA-2017-0190.html
- http://www.securityfocus.com/bid/95769
- http://www.securitytracker.com/id/1037693
- https://bugzilla.mozilla.org/show_bug.cgi?id=1319070
- https://security.gentoo.org/glsa/201702-22
- https://www.debian.org/security/2017/dsa-3771
- https://www.mozilla.org/security/advisories/mfsa2017-01/
- https://www.mozilla.org/security/advisories/mfsa2017-02/