CVE-2017-5386

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

Mozilla · Firefox ESR · Firefox

CVSS v3.0 NVD

7.3 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS v2.0 NVD

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

2.22% chance of exploitation in the next 30 days, 82nd percentile

Published

2018-06-11

Updated

2024-08-05

Proof-of-concept exploits (1)

• https://bugzilla.mozilla.org/show_bug.cgi?id=1319070

Security advisories

• https://www.mozilla.org/security/advisories/mfsa2017-01
• https://www.mozilla.org/security/advisories/mfsa2017-02
• http://rhn.redhat.com/errata/RHSA-2017-0190.html
• http://www.securityfocus.com/bid/95769
• http://www.securitytracker.com/id/1037693
• https://security.gentoo.org/glsa/201702-22
• https://www.debian.org/security/2017/dsa-3771

References

• CVE Record
• NVD entry