CVE-2019-20175
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
** DISPUTED ** An issue was discovered in ide_dma_cb() in hw/ide/core.c in QEMU 2.4.0 through 4.2.0. The guest system can crash the QEMU process in the host system via a special SCSI_IOCTL_SEND_COMMAND. It hits an assertion that implies that the size of successful DMA transfers there must be a multiple of 512 (the size of a sector). NOTE: a member of the QEMU security team disputes the significance of this issue because a "privileged guest user has many ways to cause similar DoS effect, without triggering this assert."
Overview
- CVE ID
- CVE-2019-20175
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2019-12-31T04:15:10
- Last Modified Date
- 2020-01-15T14:11:23
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* | 1 | OR | 2.4.0 | 4.2.0 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg01651.html | Exploit Mailing List Third Party Advisory |
| https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg03869.html | Mailing List Third Party Advisory |
| https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg00597.html | Third Party Advisory |
| https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg02165.html | Mailing List Patch Third Party Advisory |
| https://www.mail-archive.com/qemu-devel@nongnu.org/msg667396.html | Patch Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-20175 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20175 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:53:41 | Added to TrackCVE | |||
| 2022-12-04 08:49:29 | 2019-12-31T04:15Z | 2019-12-31T04:15:10 | CVE Published Date | updated |
| 2022-12-04 08:49:29 | 2020-01-15T14:11:23 | CVE Modified Date | updated | |
| 2022-12-04 08:49:29 | Analyzed | Vulnerability Status | updated |