CVE-2020-1711
Publication date 11 February 2020
Last updated 18 August 2025
Ubuntu priority
Description
An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU versions 2.12.0 before 4.2.1 handled a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an iscsi_co_block_status() routine. A remote user could use this flaw to crash the QEMU process, resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process on the host.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| qemu | 25.10 questing |
Fixed 1:4.2-3ubuntu1
|
| 25.04 plucky |
Fixed 1:4.2-3ubuntu1
|
|
| 24.04 LTS noble |
Fixed 1:4.2-3ubuntu1
|
|
| 22.04 LTS jammy |
Fixed 1:4.2-3ubuntu1
|
|
| 20.04 LTS focal |
Fixed 1:4.2-3ubuntu1
|
|
| 18.04 LTS bionic |
Fixed 1:2.11+dfsg-1ubuntu7.23
|
|
| 16.04 LTS xenial |
Fixed 1:2.5+dfsg-5ubuntu10.43
|
|
| 14.04 LTS trusty |
Vulnerable
|
|
| qemu-kvm | 25.10 questing | Not in release |
| 25.04 plucky | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 20.04 LTS focal | Not in release | |
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release |
Patch details
| Package | Patch details |
|---|---|
| qemu |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.7 · High
|
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | Low |
| Integrity impact | Low |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-4283-1
- QEMU vulnerabilities
- 18 February 2020