CVE-2021-3507
Published May 6, 2021
Last updated 2 years ago
Overview
- Description
- A heap buffer overflow was found in the floppy disk emulator of QEMU up to 6.0.0 (including). It could occur in fdctrl_transfer_handler() in hw/block/fdc.c while processing DMA read data transfers from the floppy drive to the guest system. A privileged guest user could use this flaw to crash the QEMU process on the host resulting in DoS scenario, or potential information leakage from the host memory.
- Source
- secalert@redhat.com
- NVD status
- Modified
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.1
- Impact score
- 4.2
- Exploitability score
- 1.8
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 3.6
- Impact score
- 4.9
- Exploitability score
- 3.9
- Vector string
- AV:L/AC:L/Au:N/C:P/I:N/A:P
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B002BA5C-F99C-460E-A53C-F61A813DD689",
"versionEndIncluding": "6.0.0"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*",
"vulnerable": true,
"matchCriteriaId": "053C1B35-3869-41C2-9551-044182DE0A64"
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3AA08768-75AF-4791-B229-AE938C780959"
}
],
"operator": "OR"
}
]
}
]