Vulnerabilities > CVE-2021-3947 - Out-of-bounds Read vulnerability in Qemu 6.0.0/6.1.0/6.2.0
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
NONE Availability impact
NONE Summary
A stack-buffer-overflow was found in QEMU in the NVME component. The flaw lies in nvme_changed_nslist() where a malicious guest controlling certain input can read out of bounds memory. A malicious user could use this flaw leading to disclosure of sensitive information.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 15 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Overread Buffers An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2021869
- https://bugzilla.redhat.com/show_bug.cgi?id=2021869
- https://security.gentoo.org/glsa/202208-27
- https://security.gentoo.org/glsa/202208-27
- https://security.netapp.com/advisory/ntap-20220318-0003/
- https://security.netapp.com/advisory/ntap-20220318-0003/