CVE-2020-14363
Publication date 25 August 2020
Last updated 24 July 2024
Ubuntu priority
An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libx11 | 20.04 LTS focal |
Fixed 2:1.6.9-2ubuntu1.1
|
| 18.04 LTS bionic |
Fixed 2:1.6.4-3ubuntu0.3
|
|
| 16.04 LTS xenial |
Fixed 2:1.6.3-1ubuntu2.2
|
|
| 14.04 LTS trusty |
Fixed 2:1.6.2-1ubuntu2.1+esm1
|
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Get Ubuntu ProSeverity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.8 · High
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-4487-1
- libx11 vulnerabilities
- 2 September 2020
- USN-4487-2
- libx11 vulnerabilities
- 8 September 2020