Mozilla: >> Firefox >> 10.0.11 Security Vulnerabilities
Mozilla developers reported memory safety bugs present in Firefox 85. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 86.
CVSS Score
8.8
EPSS Score
0.004
Published
2021-02-26
Incorrect use of the '<RowCountChanged>' method could have led to a user-after-poison and a potentially exploitable crash. This vulnerability affects Firefox < 85.
CVSS Score
8.8
EPSS Score
0.003
Published
2021-02-26
When sharing geolocation during an active WebRTC share, Firefox could have reset the webRTC sharing state in the user interface, leading to loss of control over the currently granted permission. This vulnerability affects Firefox < 85.
CVSS Score
4.3
EPSS Score
0.002
Published
2021-02-26
If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.
CVSS Score
4.3
EPSS Score
0.004
Published
2021-02-26
Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.
CVSS Score
8.8
EPSS Score
0.003
Published
2021-02-26
The browser could have been confused into transferring a pointer lock state into another tab, which could have lead to clickjacking attacks. This vulnerability affects Firefox < 85.
CVSS Score
6.1
EPSS Score
0.002
Published
2021-02-26
An ambiguous file picker design could have confused users who intended to select and upload a single file into uploading a whole directory. This was addressed by adding a new prompt. This vulnerability affects Firefox < 85.
CVSS Score
6.5
EPSS Score
0.003
Published
2021-02-26
The browser could have been confused into transferring a screen sharing state into another tab, which would leak unintended information. This vulnerability affects Firefox < 85.
CVSS Score
6.5
EPSS Score
0.003
Published
2021-02-26
Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.
CVSS Score
8.8
EPSS Score
0.004
Published
2021-02-26
Further techniques that built on the slipstream research combined with a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine. This vulnerability affects Firefox < 85.
CVSS Score
7.4
EPSS Score
0.006
Published
2021-02-26