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Vulnerability Details : CVE-2020-5291

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.
Publish Date : 2020-03-31 Last Update Date : 2020-04-02
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- CVSS Scores & Vulnerability Types

CVSS Score
8.5
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication ???
Gained Access None
Vulnerability Type(s) Gain privileges
CWE ID 269

- Products Affected By CVE-2020-5291

# Product Type Vendor Product Version Update Edition Language
1 OS Archlinux Arch Linux - * * * Version Details Vulnerabilities
2 OS Centos Centos 7.0 * * * Version Details Vulnerabilities
3 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
4 Application Projectatomic Bubblewrap * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Archlinux Arch Linux 1
Centos Centos 1
Debian Debian Linux 1
Projectatomic Bubblewrap 1

- References For CVE-2020-5291

https://github.com/containers/bubblewrap/security/advisories/GHSA-j2qp-rvxj-43vj CONFIRM
https://github.com/containers/bubblewrap/commit/1f7e2ad948c051054b683461885a0215f1806240

- Metasploit Modules Related To CVE-2020-5291

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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