Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2020-5291 | First vendor Publication | 2020-03-31 |
| Vendor | Cve | Last vendor Modification | 2020-04-02 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 7.8 | ||
| Base Score | 7.8 | Environmental Score | 7.8 |
| impact SubScore | 5.9 | Temporal Score | 7.8 |
| Exploitabality Sub Score | 1.8 | ||
| Attack Vector | Local | Attack Complexity | Low |
| Privileges Required | Low | User Interaction | None |
| Scope | Unchanged | Confidentiality Impact | High |
| Integrity Impact | High | Availability Impact | High |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:M/Au:S/C:C/I:C/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 8.5 | Attack Range | Network |
| Cvss Impact Score | 10 | Attack Complexity | Medium |
| Cvss Expoit Score | 6.8 | Authentication | Requires single instance |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Bubblewrap (bwrap) before version 0.4.1, if installed in setuid mode and the kernel supports unprivileged user namespaces, then the `bwrap --userns2` option can be used to make the setuid process keep running as root while being traceable. This can in turn be used to gain root permissions. Note that this only affects the combination of bubblewrap in setuid mode (which is typically used when unprivileged user namespaces are not supported) and the support of unprivileged user namespaces. Known to be affected are: * Debian testing/unstable, if unprivileged user namespaces enabled (not default) * Debian buster-backports, if unprivileged user namespaces enabled (not default) * Arch if using `linux-hardened`, if unprivileged user namespaces enabled (not default) * Centos 7 flatpak COPR, if unprivileged user namespaces enabled (not default) This has been fixed in the 0.4.1 release, and all affected users should update. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5291 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-269 | Improper Privilege Management |
CPE : Common Platform Enumeration
| Type | Description | Count |
|---|---|---|
| Application | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 |
Sources (Detail)
| Source | Url |
|---|---|
| CONFIRM | https://github.com/containers/bubblewrap/security/advisories/GHSA-j2qp-rvxj-43vj |
| MISC | https://github.com/containers/bubblewrap/commit/1f7e2ad948c051054b683461885a0... |
Alert History
| Date | Informations |
|---|---|
| 2021-05-04 13:55:55 |
|
| 2021-04-22 03:06:07 |
|
| 2020-05-23 02:37:00 |
|
