openEuler update for qemu
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-3682 |
| CWE-ID | CWE-763 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
openEuler Operating systems & Components / Operating system qemu-seabios Operating systems & Components / Operating system package or component qemu-help Operating systems & Components / Operating system package or component qemu-img Operating systems & Components / Operating system package or component qemu-guest-agent Operating systems & Components / Operating system package or component qemu-debugsource Operating systems & Components / Operating system package or component qemu-block-iscsi Operating systems & Components / Operating system package or component qemu-block-rbd Operating systems & Components / Operating system package or component qemu-block-ssh Operating systems & Components / Operating system package or component qemu-debuginfo Operating systems & Components / Operating system package or component qemu-block-curl Operating systems & Components / Operating system package or component qemu Operating systems & Components / Operating system package or component |
| Vendor | openEuler |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Release of invalid pointer or reference
EUVDB-ID: #VU63778
Risk: Low
CVSSv4.0: 5.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-3682
CWE-ID:
CWE-763 - Release of invalid pointer or reference
Exploit availability: No
DescriptionThe vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists in the USB redirector device emulation of QEMU when dropping packets during a bulk transfer from a SPICE client. A remote user can make QEMU call free() with faked heap chunk metadata to perform a denial of service or escalate privileges on the system.
MitigationInstall updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS SP1 - 20.03 LTS SP2
qemu-seabios: before 4.1.0-54
qemu-help: before 4.1.0-54
qemu-img: before 4.1.0-54
qemu-guest-agent: before 4.1.0-54
qemu-debugsource: before 4.1.0-54
qemu-block-iscsi: before 4.1.0-54
qemu-block-rbd: before 4.1.0-54
qemu-block-ssh: before 4.1.0-54
qemu-debuginfo: before 4.1.0-54
qemu-block-curl: before 4.1.0-54
qemu: before 4.1.0-54
CPE2.3- cpe:2.3:o:openeuler:openeuler:20.03:LTS SP1:*:*:*:*:*:*
- cpe:2.3:o:openeuler:openeuler:20.03:LTS SP2:*:*:*:*:*:*
- cpe:2.3:a:openeuler:qemu-seabios:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:qemu-help:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:qemu-img:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:qemu-guest-agent:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:qemu-debugsource:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:qemu-block-iscsi:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:qemu-block-rbd:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:qemu-block-ssh:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:qemu-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:qemu-block-curl:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:qemu:*:*:*:*:*:openeuler:*:*
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1316
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
