#VU100327 Memory leak in Xen - CVE-2024-45819

Vulnerability identifier: #VU100327

Vulnerability risk: Medium

CVSSv4.0: 5.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-45819

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Xen
Server applications / Virtualization software

Vendor: Xen Project

Description
The vulnerability allows a malicious guest to gain access to sensitive information.

The vulnerability exists due data leak in libxl related to how PBH guests work with ACPI tables. A malicious guest can access sensitive information pertaining to the host, control domain, or other guests.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Xen: 4.16 - 4.16.6

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External links
https://xenbits.xen.org/xsa/advisory-464.html

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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.