File downloads encoded with "blob:" and "data:" URL elements bypassed...
Vulnerability Description
File downloads encoded with "blob:" and "data:" URL elements bypassed normal file download checks though the Phishing and Malware Protection feature and its block lists of suspicious sites and files. This would allow malicious sites to lure users into downloading executables that would otherwise be detected as suspicious. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://www.securityfocus.com/bid/101059
- https://lists.debian.org/debian-lts-announce/2017/11/msg00000.html
- https://www.mozilla.org/security/advisories/mfsa2017-22/
- http://www.securitytracker.com/id/1039465
- https://access.redhat.com/errata/RHSA-2017:2831
- https://access.redhat.com/errata/RHSA-2017:2885
- https://www.mozilla.org/security/advisories/mfsa2017-21/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1376036
- https://www.debian.org/security/2017/dsa-4014
- https://www.mozilla.org/security/advisories/mfsa2017-23/
- https://www.debian.org/security/2017/dsa-3987
- https://security.gentoo.org/glsa/201803-14
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Timeline
CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.