Debian Linux
CVE-2021-3592
LOW
Severity by source
AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
1DescriptionNVD
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the bootp_input() function and could occur while processing a udp packet that is smaller than the size of the 'bootp_t' structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.
AnalysisAI
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. Rated low severity (CVSS 3.8), this vulnerability is low attack complexity.
Technical ContextAI
This vulnerability is classified under CWE-824. An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the bootp_input() function and could occur while processing a udp packet that is smaller than the size of the 'bootp_t' structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0. Affected products include: Libslirp Project Libslirp, Redhat Enterprise Linux, Debian Debian Linux, Fedoraproject Fedora. Version information: prior to 4.6.0..
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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