5.3

CVE-2023-6693

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.

Data is provided by the National Vulnerability Database (NVD)
Qemu ≫ Qemu Version < 8.2.1
Redhat ≫ Enterprise Linux Version8.0 SwEdition-
Redhat ≫ Enterprise Linux Version8.0 SwEditionadvanced_virtualization
Redhat ≫ Enterprise Linux Version9.0
Fedoraproject ≫ Fedora Version39
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.03% 0.074
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 5.3 1.8 3.4
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
secalert@redhat.com 4.9 1.4 3.4
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE-121 Stack-based Buffer Overflow

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.