CVE-2020-5291 Detail
Current Description
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.
Source:
MITRE
View Analysis Description
Analysis Description
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.
Source:
MITRE
Severity
CVSS 3.x Severity and Metrics:
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS 2.0 Severity and Metrics:
Vector: (AV:N/AC:M/Au:S/C:C/I:C/A:C)
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID |
CWE Name |
Source |
| CWE-269 |
Improper Privilege Management |
NIST
|
| CWE-648 |
Incorrect Use of Privileged APIs |
GitHub, Inc.
|
Change History
2 change records found
- show changes
Initial Analysis -
4/2/2020 1:33:31 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:a:projectatomic:bubblewrap:*:*:*:*:*:*:*:* versions up to (excluding) 0.4.1 |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:o:archlinux:arch_linux:-:*:*:*:*:*:*:* |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:o:centos:centos:7.0:*:*:*:*:*:*:* |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
| Added |
CVSS V2 |
|
NIST (AV:N/AC:M/Au:S/C:C/I:C/A:C) |
| Added |
CVSS V3.1 |
|
NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Added |
CWE |
|
NIST CWE-269 |
| Changed |
Reference Type |
https://github.com/containers/bubblewrap/commit/1f7e2ad948c051054b683461885a0215f1806240 No Types Assigned |
https://github.com/containers/bubblewrap/commit/1f7e2ad948c051054b683461885a0215f1806240 Patch, Third Party Advisory |
| Changed |
Reference Type |
https://github.com/containers/bubblewrap/security/advisories/GHSA-j2qp-rvxj-43vj No Types Assigned |
https://github.com/containers/bubblewrap/security/advisories/GHSA-j2qp-rvxj-43vj Mitigation, Third Party Advisory |
CVE Modified by MITRE -
3/31/2020 3:15:14 PM
| Action |
Type |
Old Value |
New Value |
| Changed |
Description |
Record truncated, showing 500 of 933 characters.
View Entire Change Record
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 t |
Record truncated, showing 500 of 925 characters.
View Entire Change Record
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 |
Quick Info
CVE Dictionary Entry:
CVE-2020-5291
NVD Published Date:
03/31/2020
NVD Last Modified:
04/02/2020
|