CVE-2023-6693
Description
A stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing TX in the virtio_net_flush_tx function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and VIRTIO_NET_F_MRG_RXBUF are enabled. This could allow a malicious user to overwrite local variables allocated on the stack. Specifically, the out_sg variable could be used to read a part of process memory and send it to the wire, causing an information leak.
- CVSS Version 3.1
nvd
CVE ID: CVE-2023-6693
Base Score: 5.3
Base Severity: MEDIUM
Vector String:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Impact Score: 3.4
Exploitability Score: 1.8
redhat
CVE ID: CVE-2023-6693
Base Score: 4.9
Base Severity: MEDIUM
Vector String:CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Impact Score: 3.4
Exploitability Score: 1.4