openEuler update for libvirt

Published: 2021-10-15

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-3667 CVE-2021-3631
CWE-ID	CWE-667 CWE-732
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	openEuler Operating systems & Components / Operating system libvirt-daemon-driver-storage-mpath Operating systems & Components / Operating system package or component libvirt-wireshark Operating systems & Components / Operating system package or component libvirt-daemon-config-nwfilter Operating systems & Components / Operating system package or component libvirt-daemon-driver-storage-rbd Operating systems & Components / Operating system package or component libvirt-daemon Operating systems & Components / Operating system package or component libvirt-daemon-driver-storage Operating systems & Components / Operating system package or component libvirt-daemon-driver-network Operating systems & Components / Operating system package or component libvirt-lock-sanlock Operating systems & Components / Operating system package or component libvirt-daemon-config-network Operating systems & Components / Operating system package or component libvirt-daemon-driver-storage-iscsi Operating systems & Components / Operating system package or component libvirt-debugsource Operating systems & Components / Operating system package or component libvirt-libs Operating systems & Components / Operating system package or component libvirt-daemon-driver-storage-scsi Operating systems & Components / Operating system package or component libvirt-daemon-driver-nodedev Operating systems & Components / Operating system package or component libvirt-daemon-driver-storage-core Operating systems & Components / Operating system package or component libvirt-docs Operating systems & Components / Operating system package or component libvirt-daemon-driver-secret Operating systems & Components / Operating system package or component libvirt-daemon-driver-nwfilter Operating systems & Components / Operating system package or component libvirt-daemon-driver-storage-disk Operating systems & Components / Operating system package or component libvirt-daemon-driver-storage-gluster Operating systems & Components / Operating system package or component libvirt-daemon-driver-interface Operating systems & Components / Operating system package or component libvirt-devel Operating systems & Components / Operating system package or component libvirt-daemon-driver-storage-logical Operating systems & Components / Operating system package or component libvirt-bash-completion Operating systems & Components / Operating system package or component libvirt-admin Operating systems & Components / Operating system package or component libvirt-debuginfo Operating systems & Components / Operating system package or component libvirt-client Operating systems & Components / Operating system package or component libvirt-daemon-kvm Operating systems & Components / Operating system package or component libvirt-daemon-qemu Operating systems & Components / Operating system package or component libvirt-nss Operating systems & Components / Operating system package or component libvirt-daemon-driver-qemu Operating systems & Components / Operating system package or component libvirt-daemon-driver-storage-iscsi-direct Operating systems & Components / Operating system package or component libvirt Operating systems & Components / Operating system package or component
Vendor	openEuler

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper locking

EUVDB-ID: #VU62734

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-3667

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service attack (DoS) on the target system.

The vulnerability exists due to double-locking error in the virStoragePoolLookupByTargetPath API in libvirt in storage/storage_driver.c. The storagePoolLookupByTargetPath() function does not properly release a locked object (virStoragePoolObj) on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions can use this vulnerability to acquire the lock and prevent other users from accessing storage pool/volume APIs. As a result a local user can perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP2

libvirt-daemon-driver-storage-mpath: before 6.2.0-13

libvirt-wireshark: before 6.2.0-13

libvirt-daemon-config-nwfilter: before 6.2.0-13

libvirt-daemon-driver-storage-rbd: before 6.2.0-13

libvirt-daemon: before 6.2.0-13

libvirt-daemon-driver-storage: before 6.2.0-13

libvirt-daemon-driver-network: before 6.2.0-13

libvirt-lock-sanlock: before 6.2.0-13

libvirt-daemon-config-network: before 6.2.0-13

libvirt-daemon-driver-storage-iscsi: before 6.2.0-13

libvirt-debugsource: before 6.2.0-13

libvirt-libs: before 6.2.0-13

libvirt-daemon-driver-storage-scsi: before 6.2.0-13

libvirt-daemon-driver-nodedev: before 6.2.0-13

libvirt-daemon-driver-storage-core: before 6.2.0-13

libvirt-docs: before 6.2.0-13

libvirt-daemon-driver-secret: before 6.2.0-13

libvirt-daemon-driver-nwfilter: before 6.2.0-13

libvirt-daemon-driver-storage-disk: before 6.2.0-13

libvirt-daemon-driver-storage-gluster: before 6.2.0-13

libvirt-daemon-driver-interface: before 6.2.0-13

libvirt-devel: before 6.2.0-13

libvirt-daemon-driver-storage-logical: before 6.2.0-13

libvirt-bash-completion: before 6.2.0-13

libvirt-admin: before 6.2.0-13

libvirt-debuginfo: before 6.2.0-13

libvirt-client: before 6.2.0-13

libvirt-daemon-kvm: before 6.2.0-13

libvirt-daemon-qemu: before 6.2.0-13

libvirt-nss: before 6.2.0-13

libvirt-daemon-driver-qemu: before 6.2.0-13

libvirt-daemon-driver-storage-iscsi-direct: before 6.2.0-13

libvirt: before 6.2.0-13

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1385

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) Incorrect permission assignment for critical resource

EUVDB-ID: #VU62735

Risk: Medium

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-3631

CWE-ID: CWE-732 - Incorrect Permission Assignment for Critical Resource