Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2020-15257 CVE-2021-21334 |
CWE-ID | CWE-284 CWE-399 |
Exploitation vector | Network |
Public exploit | Public exploit code for vulnerability #1 is available. |
Vulnerable software |
Gentoo Linux Operating systems & Components / Operating system |
Vendor | Gentoo |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU48795
Risk: Medium
CVSSv4.0: 7.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]
CVE-ID: CVE-2020-15257
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. Access controls for the shim’s API socket verified that the connecting process had an effective UID of 0, but did not otherwise restrict access to the abstract Unix domain socket. This would allow malicious containers running in the same network namespace as the shim, with an effective UID of 0 but otherwise reduced privileges, to cause new processes to be run with elevated privileges.
MitigationUpdate the affected packages.
app-emulation/containerd to version: 1.4.4
Gentoo Linux: All versions
CPE2.3 External linkshttp://security.gentoo.org/
http://security.gentoo.org/glsa/202105-33
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. However, proof of concept for this vulnerability is available.
EUVDB-ID: #VU51242
Risk: Medium
CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-21334
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows an attacker to gain access to potentially sensitive information.
The vulnerability exists due to incorrect management of internal resources. Containers launched through containerd's CRI implementation (through Kubernetes, crictl, or any other pod/container client that uses the containerd CRI service) that share the same image may receive incorrect environment variables, including values that are defined for other containers. If the affected containers have different security contexts, this may allow sensitive information to be unintentionally shared. MitigationUpdate the affected packages.
app-emulation/containerd to version: 1.4.4
Gentoo Linux: All versions
CPE2.3 External linkshttp://security.gentoo.org/
http://security.gentoo.org/glsa/202105-33
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.