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CVE

CVE-2019-11730

A vulnerability exists where if a user opens a locally saved HTML file, this file can use file: URIs to access other fil

A vulnerability exists where if a user opens a locally saved HTML file, this file can use file: URIs to access other files in the same directory or sub-directories if the names are known or guessed. The Fetch API can then be used to read the contents of any files stored in these directories and they may uploaded to a server. It was demonstrated that in combination with a popular Android messaging app, if a malicious HTML attachment is sent to a user and they opened that attachment in Firefox, due to that app's predictable pattern for locally-saved file names, it is possible to read attachments the victim received from other correspondents.

This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

MEDIUM · CVSS 6.5 EPSS 0.18406
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 5% of all CVEs by exploitation likelihood
Sigma rules1 YARA rules0
▤

Affected Products & Versions

6
mozilla firefox< 68.0
mozilla firefox esr< 60.8
mozilla thunderbird< 60.8
debian linuxall versions
opensuse leapall versions
suse package huball versions
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSQLite Firefox Profile Data DB Access
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · security@mozilla.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD23 Jul 2019 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

27
suse-csafopenSUSE-SU-2024:14572-1
suse-csafopenSUSE-SU-2024:10600-1
suse-csafopenSUSE-SU-2024:10601-1
suse-csafSUSE-SU-2019:14246-1
suse-csafSUSE-SU-2019:2620-1
🔗

References & Sources

13
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.htmlMailing ListThird Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1558299Issue TrackingPermissions Required
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