The Firefox installer allows Firefox to be installed to a custom user writable location, leaving it unprotected from manipulation by unprivileged users or malware. If the Mozilla Maintenance Service is manipulated to update this unprotected location and the updated maintenance service in the unprotected location has been altered, the altered maintenance service can run with elevated privileges during the update process due to a lack of integrity checks. This allows for privilege escalation if the executable has been replaced locally. <br>*Note: This attack requires local system access and only affects Windows. Other operating systems are not affected.*. This vulnerability affects Firefox < 69, Firefox ESR < 60.9, and Firefox ESR < 68.1.
References
Link | Resource |
---|---|
https://bugzilla.mozilla.org/show_bug.cgi?id=1574980 | Issue Tracking Permissions Required Vendor Advisory |
https://www.mozilla.org/security/advisories/mfsa2019-27/ | Vendor Advisory |
https://www.mozilla.org/security/advisories/mfsa2019-25/ | Vendor Advisory |
https://www.mozilla.org/security/advisories/mfsa2019-26/ | Vendor Advisory |
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html | |
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html |
Configurations
Configuration 1 (hide)
AND |
|
Information
Published : 2019-09-27 11:15
Updated : 2019-10-04 23:15
NVD link : CVE-2019-11753
Mitre link : CVE-2019-11753
JSON object : View
CWE
CWE-354
Improper Validation of Integrity Check Value
Products Affected
mozilla
- firefox
- firefox_esr
microsoft
- windows