CVE-2020-6820
Published: 3 April 2020
Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.
Priority
High
CVSS 3 base score: 8.1
Status
| Package | Release | Status |
|---|---|---|
|
firefox Launchpad, Ubuntu, Debian |
bionic |
Released
(74.0.1+build1-0ubuntu0.18.04.1)
|
| eoan |
Released
(74.0.1+build1-0ubuntu0.19.10.1)
|
|
| focal |
Released
(75.0+build3-0ubuntu1)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(74.0.1)
|
|
| xenial |
Released
(74.0.1+build1-0ubuntu0.16.04.1)
|
|
|
thunderbird Launchpad, Ubuntu, Debian |
bionic |
Released
(1:68.7.0+build1-0ubuntu0.18.04.1)
|
| eoan |
Released
(1:68.7.0+build1-0ubuntu0.19.10.1)
|
|
| focal |
Released
(1:68.7.0+build1-0ubuntu1)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(68.7.0)
|
|
| xenial |
Released
(1:68.7.0+build1-0ubuntu0.16.04.2)
|
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6820
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-11/#CVE-2020-6820
- https://ubuntu.com/security/notices/USN-4317-1
- https://ubuntu.com/security/notices/USN-4328-1
- https://ubuntu.com/security/notices/USN-4335-1
- NVD
- Launchpad
- Debian