Ubuntu.comUB:CVE-2020-12387CVE-2020-12387
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.009 Low
EPSS
Percentile
82.4%
A race condition when running shutdown code for Web Worker led to a
use-after-free vulnerability. This resulted in a potentially exploitable
crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and
Thunderbird < 68.8.0.
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | firefox | < 76.0+build2-0ubuntu0.18.04.1 | UNKNOWN |
| ubuntu | 19.10 | noarch | firefox | < 76.0+build2-0ubuntu0.19.10.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | firefox | < 76.0+build2-0ubuntu0.20.04.1 | UNKNOWN |
| ubuntu | 20.10 | noarch | firefox | < 76.0+build2-0ubuntu1 | UNKNOWN |
| ubuntu | 21.04 | noarch | firefox | < 76.0+build2-0ubuntu1 | UNKNOWN |
| ubuntu | 21.10 | noarch | firefox | < 76.0+build2-0ubuntu1 | UNKNOWN |
| ubuntu | 22.04 | noarch | firefox | < 76.0+build2-0ubuntu1 | UNKNOWN |
| ubuntu | 22.10 | noarch | firefox | < 76.0+build2-0ubuntu1 | UNKNOWN |
| ubuntu | 23.04 | noarch | firefox | < 76.0+build2-0ubuntu1 | UNKNOWN |
| ubuntu | 23.10 | noarch | firefox | < 76.0+build2-0ubuntu1 | UNKNOWN |
References
launchpad.net/bugs/cve/CVE-2020-12387
nvd.nist.gov/vuln/detail/CVE-2020-12387
security-tracker.debian.org/tracker/CVE-2020-12387
ubuntu.com/security/notices/USN-4353-1
ubuntu.com/security/notices/USN-4373-1
www.cve.org/CVERecord?id=CVE-2020-12387
www.mozilla.org/en-US/security/advisories/mfsa2020-16/#CVE-2020-12387
www.mozilla.org/en-US/security/advisories/mfsa2020-17/#CVE-2020-12387
www.mozilla.org/en-US/security/advisories/mfsa2020-18/#CVE-2020-12387
Related
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.009 Low
EPSS
Percentile
82.4%