#VU28191 Resource management error in libvirt - CVE-2020-10703

Vulnerability identifier: #VU28191

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-10703

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libvirt
Universal components / Libraries / Libraries used by multiple products

Vendor: libvirt.org

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
Install updates from vendor's website.

Vulnerable software versions

libvirt: 3.10.0 - 5.10.0

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External links
https://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=dfff16a7c261f8d28e3abe60a47165f845fa952f;hp=7a7d36055ce7c161e9309c7bad7f8e61be31c5b8
https://bugzilla.redhat.com/show_bug.cgi?id=1790725

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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.