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Ubuntu update for libvirt



Published: 2020-05-23
Severity Medium
Patch available YES
Number of vulnerabilities 2
CVE ID CVE-2020-10703
CVE-2020-12430
CWE ID CWE-399
CWE-401
Exploitation vector Network
Public exploit N/A
Vulnerable software
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libvirt (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Advisory

1) Resource management error

Severity: Low

CVSSv3: 2.4 [CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-10703

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources with the application when performing pool lookups within the storagePoolLookupByTargetPath() function in storage/storage_driver.c. A remote user can create a pool with empty target path and then perform  search for an empty target, which results in libvirt crash.

Mitigation

Update the affected packages.

Ubuntu 19.10
libvirt-clients - 5.4.0-0ubuntu5.4
libvirt-daemon - 5.4.0-0ubuntu5.4
libvirt0 - 5.4.0-0ubuntu5.4
Ubuntu 18.04 LTS
libvirt-clients - 4.0.0-1ubuntu8.17
libvirt-daemon - 4.0.0-1ubuntu8.17
libvirt0 - 4.0.0-1ubuntu8.17

Vulnerable software versions

libvirt (Ubuntu package): 4.0.0-1ubuntu8.1, 4.0.0-1ubuntu8.2, 4.0.0-1ubuntu8.3, 4.0.0-1ubuntu8.4, 4.0.0-1ubuntu8.5, 4.0.0-1ubuntu8.6, 4.0.0-1ubuntu8.7, 4.0.0-1ubuntu8.8, 4.0.0-1ubuntu8.9, 4.0.0-1ubuntu8.10, 4.0.0-1ubuntu8.11, 4.0.0-1ubuntu8.12, 4.0.0-1ubuntu8.13, 4.0.0-1ubuntu8.14, 4.0.0-1ubuntu8.15, 4.0.0-1ubuntu8.16, 5.4.0-0ubuntu5.1, 5.4.0-0ubuntu5.2, 5.4.0-0ubuntu5.3

CPE External links

https://usn.ubuntu.com/4371-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Memory leak

Severity: Medium

CVSSv3: 5.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-12430

CWE-ID: CWE-401 - Improper Release of Memory Before Removing Last Reference ('Memory Leak')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the domstats command, resulting in a potential denial of service due to an error in the qemuDomainGetStatsIOThread() in qemu/qemu_driver.c in libvirt. A remote attacker can perform a denial of service attack.

Mitigation

Update the affected packages.

Ubuntu 19.10
libvirt-clients - 5.4.0-0ubuntu5.4
libvirt-daemon - 5.4.0-0ubuntu5.4
libvirt0 - 5.4.0-0ubuntu5.4
Ubuntu 18.04 LTS
libvirt-clients - 4.0.0-1ubuntu8.17
libvirt-daemon - 4.0.0-1ubuntu8.17
libvirt0 - 4.0.0-1ubuntu8.17

Vulnerable software versions

libvirt (Ubuntu package): 4.0.0-1ubuntu8.1, 4.0.0-1ubuntu8.2, 4.0.0-1ubuntu8.3, 4.0.0-1ubuntu8.4, 4.0.0-1ubuntu8.5, 4.0.0-1ubuntu8.6, 4.0.0-1ubuntu8.7, 4.0.0-1ubuntu8.8, 4.0.0-1ubuntu8.9, 4.0.0-1ubuntu8.10, 4.0.0-1ubuntu8.11, 4.0.0-1ubuntu8.12, 4.0.0-1ubuntu8.13, 4.0.0-1ubuntu8.14, 4.0.0-1ubuntu8.15, 4.0.0-1ubuntu8.16, 5.4.0-0ubuntu5.1, 5.4.0-0ubuntu5.2, 5.4.0-0ubuntu5.3

CPE External links

https://usn.ubuntu.com/4371-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.