CVE-2019-11736
The Mozilla Maintenance Service does not guard against files being hardlinked to another file in the updates directory, allowing for the replacement of local files, including the Maintenance Service executable, which is run with privileged access. Additionally, there was a race condition during checks for junctions and symbolic links by the Maintenance Service, allowing for potential local file and directory manipulation to be undetected in some circumstances. This allows for potential privilege escalation by a user with unprivileged local access. <br>*Note: These attacks requires local system access and only affects Windows. Other operating systems are not affected.*. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1.
EPSS 0.21% · 11.1th percentile
Risk Scores
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | mozjs38 | 38.8.0~repack1-0ubuntu1, 38.8.0~repack1-0ubuntu4, 0 |
| Ubuntu:20.04:LTS | mozjs52 | 52.9.1-1ubuntu3, 0, 52.9.1-1build1 |
| Ubuntu:18.04:LTS | mozjs52 | 52.8.1-0ubuntu0.18.04.1, 52.3.1-7fakesync1, 52.3.1-0ubuntu3 |
Timeline
- Sep 4, 2019 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2019-11736 third-party-advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-11736 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2019-11736 third-party-advisory