openEuler 20.03 LTS SP1 update for qemu
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-3638 |
| CWE-ID | CWE-787 |
| Exploitation vector | Local |
| 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-block-ssh Operating systems & Components / Operating system package or component qemu-block-iscsi Operating systems & Components / Operating system package or component qemu-guest-agent Operating systems & Components / Operating system package or component qemu-block-curl Operating systems & Components / Operating system package or component qemu-block-rbd Operating systems & Components / Operating system package or component qemu-img Operating systems & Components / Operating system package or component qemu-debuginfo Operating systems & Components / Operating system package or component qemu-debugsource 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 medium risk vulnerability.
1) Out-of-bounds write
EUVDB-ID: #VU72306
Risk: Medium
CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-3638
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
Description The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the ATI VGA device emulation of QEMU within the ati_2d_blt() routine while handling MMIO write operations. A malicious guest can crash the QEMU process on the host.
MitigationInstall updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS SP1
qemu-seabios: before 4.1.0-71
qemu-help: before 4.1.0-71
qemu-block-ssh: before 4.1.0-71
qemu-block-iscsi: before 4.1.0-71
qemu-guest-agent: before 4.1.0-71
qemu-block-curl: before 4.1.0-71
qemu-block-rbd: before 4.1.0-71
qemu-img: before 4.1.0-71
qemu-debuginfo: before 4.1.0-71
qemu-debugsource: before 4.1.0-71
qemu: before 4.1.0-71
CPE2.3- cpe:2.3:o:openeuler:openeuler:20.03:LTS SP1:*:*:*:*:*:*
- cpe:2.3:o:openeuler:qemu-seabios:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:qemu-help:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:qemu-block-ssh:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:qemu-block-iscsi:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:qemu-guest-agent:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:qemu-block-curl:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:qemu-block-rbd:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:qemu-img:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:qemu-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:qemu-debugsource:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:qemu:*:*:*:*:*:openeuler:*:*
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1995
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
