Denial of service in QEMU

1) Reachable assertion

EUVDB-ID: #VU94529

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-3567

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion within the update_sctp_checksum() function in hw/net/net_tx_pkt.c when trying to calculate the checksum of a short-sized fragmented packet. A malicious guest can crash the QUEMU process.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

QEMU: before 8.2.3

External links

http://access.redhat.com/security/cve/CVE-2024-3567
http://bugzilla.redhat.com/show_bug.cgi?id=2274339
http://gitlab.com/qemu-project/qemu/-/issues/2273

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.