Out-of-bounds read in QEMU

1) Out-of-bounds read

EUVDB-ID: #VU84979

Risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4135

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the NVMe virtual device. A remote administrator can trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

QEMU: 8.0.0 - 8.0.5

External links

http://access.redhat.com/security/cve/CVE-2023-4135
http://bugzilla.redhat.com/show_bug.cgi?id=2229101
http://www.zerodayinitiative.com/advisories/ZDI-CAN-21521
http://security.netapp.com/advisory/ntap-20230915-0012/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.