openEuler 22.03 LTS update for lxc



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2022-47952
CVE-2018-6556
CWE-ID CWE-668
CWE-200
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe 		openEuler
Operating systems & Components / Operating system

lxc-help
Operating systems & Components / Operating system package or component

lxc-devel
Operating systems & Components / Operating system package or component

lxc-debuginfo
Operating systems & Components / Operating system package or component

lxc-libs
Operating systems & Components / Operating system package or component

lxc-debugsource
Operating systems & Components / Operating system package or component

lxc
Operating systems & Components / Operating system package or component

Vendor openEuler

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Exposure of Resource to Wrong Sphere

EUVDB-ID: #VU71474

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-47952

CWE-ID: CWE-668 - Exposure of resource to wrong sphere

Exploit availability: No

Description

The vulnerability allows a local user to compromise the system.

The vulnerability exists due to exposure of resource to wrong sphere in lxc-user-nic. A local user can obtain file existence information.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS

lxc-help: before 4.0.3-2022102408

lxc-devel: before 4.0.3-2022102408

lxc-debuginfo: before 4.0.3-2022102408

lxc-libs: before 4.0.3-2022102408

lxc-debugsource: before 4.0.3-2022102408

lxc: before 4.0.3-2022102408

CPE2.3 External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1076


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.

2) Information disclosure

EUVDB-ID: #VU14510

Risk: Low

CVSSv3.1: 3.5 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-6556

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local unauthenticated attacker to obtain potentially sensitive information on the target system.

The weakness exists due to lxc-user-nic unconditionally opens a user provided path when asked to delete a network interface. A local attacker can check for the existence of a path which he wouldn't otherwise be able to reach and trigger side effects by causing a (read-only) open of special kernel files (ptmx, proc, sys).

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS

lxc-help: before 4.0.3-2022102408

lxc-devel: before 4.0.3-2022102408

lxc-debuginfo: before 4.0.3-2022102408

lxc-libs: before 4.0.3-2022102408

lxc-debugsource: before 4.0.3-2022102408

lxc: before 4.0.3-2022102408

CPE2.3 External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1076


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.



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