#VU87374 Race condition in Xen - CVE-2024-2193

Vulnerability identifier: #VU87374

Vulnerability risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2024-2193

CWE-ID: CWE-362

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Xen
Server applications / Virtualization software

Vendor: Xen Project

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a speculative race condition. A local user can exploit the race and gain unauthorized access to contents of arbitrary host memory, including memory assigned to other guests.

The vulnerability was dubbed GhostRace.

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-453.html
https://vusec.net/projects/ghostrace

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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.