Information disclosure in Xen hypercall page implementation

1) Processor optimization removal or modification of security-critical code

EUVDB-ID: #VU101817

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 - Processor optimization removal or modification of security-critical code

Exploit availability: No

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

CPE2.3

• cpe:2.3:a:xen_project:xen:*:*:*:*:*:*:*:*

External links

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

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.