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A use-after-free vulnerability can occur when manipulating arrays of Accessible Rich Internet Applications (ARIA) elements within containers through the DOM. This results in a potentially exploitable crash. This vulnerability...
2 affected packages
firefox, thunderbird
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| firefox | — | — | — | — | Fixed |
| thunderbird | — | — | — | — | Fixed |
WebExtensions could use popups and panels in the extension UI to load an "about:" privileged URL, violating security checks that disallow this behavior. This vulnerability affects Firefox < 56.
1 affected package
firefox
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| firefox | — | — | — | — | Fixed |
On pages containing an iframe, the "data:" protocol can be used to create a modal dialog through Javascript that will have an arbitrary domains as the dialog's location, spoofing of the origin of the modal dialog from the...
1 affected package
firefox
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| firefox | — | — | — | — | Fixed |
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...
2 affected packages
firefox, thunderbird
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| firefox | — | — | — | — | Fixed |
| thunderbird | — | — | — | — | Fixed |
Some fixes available 17 of 20
Inside the JavaScript parser, a cast of an integer to a narrower type can result in data read from outside the buffer being parsed. This usually results in a non-exploitable crash, but can leak a limited amount of information from...
3 affected packages
firefox, mozjs38, mozjs52
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| firefox | — | Fixed | Fixed | Fixed | Fixed |
| mozjs38 | — | Not in release | Not in release | Not in release | Ignored |
| mozjs52 | — | Not in release | Not in release | Not affected | Not affected |
If web content on a page is dragged onto portions of the browser UI, such as the tab bar, links can be opened that otherwise would not be allowed to open. This can allow malicious web content to open a locally stored file through...
1 affected package
firefox
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| firefox | — | — | — | — | Fixed |
Some fixes available 17 of 20
Memory safety bugs were reported in Firefox 55. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects...
3 affected packages
firefox, mozjs38, mozjs52
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| firefox | — | Fixed | Fixed | Fixed | Fixed |
| mozjs38 | — | Not in release | Not in release | Not in release | Ignored |
| mozjs52 | — | Not in release | Not in release | Not affected | Not affected |
Some fixes available 36 of 44
Memory safety bugs were reported in Firefox 55 and Firefox ESR 52.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This...
4 affected packages
firefox, mozjs38, mozjs52, thunderbird
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| firefox | — | Fixed | Fixed | Fixed | Fixed |
| mozjs38 | — | Not in release | Not in release | Not in release | Ignored |
| mozjs52 | — | Not in release | Not in release | Ignored | Fixed |
| thunderbird | — | Fixed | Fixed | Fixed | Fixed |
A use-after-free vulnerability can occur in the Fetch API when the worker or the associated window are freed when still in use, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR <...
2 affected packages
firefox, thunderbird
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| firefox | — | — | — | — | Fixed |
| thunderbird | — | — | — | — | Fixed |
During TLS 1.2 exchanges, handshake hashes are generated which point to a message buffer. This saved data is used for later messages but in some cases, the handshake transcript can exceed the space available in the current buffer,...
3 affected packages
firefox, nss, thunderbird
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| firefox | — | — | — | — | Fixed |
| nss | — | — | — | — | Fixed |
| thunderbird | — | — | — | — | Fixed |