CVE-2021-3593
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- CVE-2021-3593
CVE Details
| Release Date: | 2021-06-15 |
Description
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp6_input() function and could occur while processing a udp packet that is smaller than the size of the 'udphdr' structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.
See more information about CVE-2021-3593 from MITRE CVE dictionary and NIST NVD
CVSS v3.0 metrics
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
| Base Score: | 3.8 | Base Metrics: | AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
| Access Vector: | Local network | Attack Complexity: | Low |
| Privileges Required: | Low | User Interaction: | None |
| Scope: | Changed | Confidentiality Impact: | Low |
| Integrity Impact: | None | Availability Impact: | None |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 7 (qemu) | ELSA-2021-9638 | 2022-01-04 |
| Oracle Linux version 8 (hivex) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (hivex) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (libguestfs) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libguestfs) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (libiscsi) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libiscsi) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (libnbd) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libnbd) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (libvirt) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libvirt) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (libvirt-dbus) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libvirt-dbus) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (libvirt-python) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libvirt-python) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (nbdkit) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (nbdkit) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (netcf) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (netcf) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (qemu-kvm) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (qemu-kvm) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (seabios) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (seabios) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (sgabios) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (sgabios) | ELSA-2022-9172 | 2022-02-25 |
| Oracle Linux version 8 (supermin) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (supermin) | ELSA-2022-9172 | 2022-02-25 |
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