#VU101817 Processor optimization removal or modification of security-critical code in Xen - CVE-2024-53241

Vulnerability identifier: #VU101817

Vulnerability risk: Low

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

CVE-ID: CVE-2024-53241

CWE-ID: CWE-1037

Exploitation vector: Local

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 to implemented mitigations for hardware vulnerabilities related to Xen hypercall page implementation the guest OS is relying on to work might not be fully functional, resulting in e.g. guest user processes being able to read data they ought not have access to.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Xen: All versions

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External links
https://xenbits.xen.org/xsa/advisory-466.html

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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.