VDB
CVE-2020-26967
CVE-2020-26967
PUBLISHED
CVSS 6.5 MEDIUM
When listening for page changes with a Mutation Observer, a malicious web page could confuse Firefox Screenshots into interacting with elements other than those that it injected into the page. This would lead to internal errors and unexpected behavior in the Screenshots code. This vulnerability affects Firefox < 83.
EPSS 0.85% · 56.6th percentile
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS Score
0.85%
56.6th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:20.04:LTS | mozjs68 | 0, 68.5.0-1~fakesync, 68.5.0-2~fakesync |
| Ubuntu:18.04:LTS | mozjs52 | 52.8.1-0ubuntu0.18.04.1, 52.3.1-0ubuntu3, 52.3.1-7fakesync1 |
| Ubuntu:20.04:LTS | firefox | 81.0+build2-0ubuntu0.20.04.1, 80.0.1+build1-0ubuntu0.20.04.1, 80.0+build2-0ubuntu0.20.04.1 |
| Ubuntu:16.04:LTS | firefox | 59.0.2+build1-0ubuntu0.16.04.3, 60.0+build2-0ubuntu0.16.04.1, 60.0.1+build2-0ubuntu0.16.04.1 |
| Ubuntu:18.04:LTS | firefox | 67.0.3+build1-0ubuntu0.18.04.1, 67.0.4+build1-0ubuntu0.18.04.1, 68.0.1+build1-0ubuntu0.18.04.1 |
| Ubuntu:20.04:LTS | mozjs52 | 52.9.1-1ubuntu3, 52.9.1-1build1, 0 |
| Ubuntu:18.04:LTS | mozjs38 | *, 0, 38.8.0~repack1-0ubuntu3 |
Timeline
- Nov 17, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Oct 27, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Mar 3, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 5, 2022 EPSS Score
- Jul 7, 2022 EPSS Score
- Sep 9, 2022 EPSS Score
- Nov 11, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-26967 third-party-advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-26967 third-party-advisory
- https://ubuntu.com/security/notices/USN-4637-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-4637-2 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-26967 third-party-advisory