Privilege escalation in Podman
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-20188 |
| CWE-ID | CWE-264 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Podman Universal components / Libraries / Libraries used by multiple products |
| Vendor | Container Projects |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Security restrictions bypass
EUVDB-ID: #VU51017
Risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-20188
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to file permissions for non-root users running in a privileged container are not correctly checked. A local low-privileged user inside the container can access arbitrary files in the container despite file permissions, e.g. even files owned by the root user inside the container are accessible.
Successful exploitation of the vulnerability may allow a local user to escalate privileges on the system.
Install updates from vendor's website.
Vulnerable software versionsPodman: 1.0.0 - 1.6.5
External linkshttp://bugzilla.redhat.com/show_bug.cgi?id=1915734
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
